HELLO, INTERNET
Hi, I'm
Gunpowder
Robotics undergraduate at Tongji University. Here you will find my websites, favorite tools, communities, and ideas I am exploring.
About me
A little about me and what I am working on.
From a small-town student and OIer
to exploring robotics and embodied AI.
I studied physics, chemistry, and biology while enjoying history, politics, and geography. Now I study robotics at Tongji University and explore embodied AI and world models. I have used the Gunpowder name and avatar since 2020. I also have more than a dozen online identities, now brought together under the Hachile network.
- University
- Tongji University
- Major
- Guohao College Future Technology Class (Robotics)
- Focus
- Embodied AI, world models
- Social
- I run more than 100 online communities
Interests and goals INTERESTS
I enjoy history, current affairs, and human geography;
I sometimes play rhythm games, Paradox games, and io games;
I am also interested in military studies, urban planning, philosophy, rail transit, digital art, and composition.
My websites
Sites I build, maintain, or visit often.
Personal sites HACHILE NETWORK
My communities
I have founded and run over 100 online communities, reaching more than 10,000 students and 100,000 people online.
Contact
Feel free to exchange site links, meow QAQ
Other identities
Other accounts I use in different communities and projects.
To see bot accounts, visit bot.hachile.org
Join the conversation
Share site feedback, discuss projects, request a link exchange, or just say hello. No account is needed. Your name and message are public; your deletion key stays in this browser.
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ChangelogHACHILE.ORGExpand full changelog
Campus paid-voting observations published
Published an anonymized account of a campus paid-voting event on blog.hachile.org, covering event rules, the author’s observations, and suggestions. The post is dated March 15, 2026.
Waichuansha travel notes published
Published the Waichuansha travel notes on blog.hachile.org, preserving the text, four photos and captions, with a post date of November 22, 2025.
Future Technology Class WeChat farewell archived
Archived the Tongji University Future Technology Class WeChat farewell on blog.hachile.org, with its original publication date, text, and photo.
Research and project showcase redesigned
Redesigned research.hachile.org to showcase eight research and project outcomes with roles, methods, awards, national innovation project status, a clearly marked paper under submission, nine repository links, and a responsive project index.
Research link added to CV
Added a research.hachile.org link to the project experience section on cv.hachile.org in both Chinese and English.
HACH News added to Tools
Added HACH News to the Learning and Writing section on tools.hachile.org with links to AI Morning Brief and HACH Daily.
HACH News added to Home
Added news.hachile.org to Home’s Communities and Tools section, linking to the AI Morning Brief and HACH Daily archives on Chinese, English, and mobile pages.
HACH News daily digest archive launched
Launched news.hachile.org with AI Morning Brief and HACH Daily archives by category and date, a content format for future Muse publishing, and support for text entries, source links, and report images. The site currently shows an empty state with no sample news.
TypeBox added to Tools
Added TypeBox to the Learning and Writing section on tools.hachile.org for Markdown editing and formatting tools.
Community cards arranged in one continuous grid
Removed community category headings and sidebar sublinks from Home, combining the 23 groups and the all-communities link into one continuous grid while preserving their order and icons.
Homepage community selection and WeChat ID updated
Reduced Home’s community selection to 23 groups, updated the introduction and three group names, added a highlighted link to all communities, and changed the WeChat ID to gpddev.
Community research interests added
Added research interests in democratic community practices, formalizing QQ groups, and building high-value communities to the groups.hachile.org introduction, using the existing paragraph style.
Lithium dendrite paper reading notes published
Published Preliminary Reading Notes on Three Lithium Dendrite Papers on blog.hachile.org, preserving the notes on phase-field models, Bayesian parameter optimization, and machine-learning-assisted inverse design, along with open questions and the three DOI links.
Blog homepage streamlined and CNBlogs archive migrated
Streamlined the navigation and homepage title on blog.hachile.org, reduced the profile avatar, pointed the main-site link to home.hachile.org, and renamed the pinned post Welcome to My Blog. Migrated all six public CNBlogs posts with their original publication dates, code, and four illustrations.
UK study trip reflections and Oxford travel notes published
Published UK Study Trip Reflections and Lawns, Rainbows, and a University Without Walls on blog.hachile.org, including two landscape photographs in the travel notes.
Stock trading group added
Added the stock trading group 1040957207 to Campus and Interests on groups.hachile.org, bringing the category to 33 groups, the directory to 108 QQ groups, and the total to 112 online communities.
Backpropagation and Transformer notes published
Published backpropagation and Transformer study notes on blog.hachile.org, preserving the original text in sections on backpropagation, embeddings, attention, and multilayer perceptrons.
Furpony Institute trilingual culture journal launched
Launched furpony.hachile.org with Chinese, English, and German homepages and articles, published Consumption, Fursonas, and Belonging, added email and QQ contact channels for submissions, and listed the new site in the directory.
Guohao history QQ group added
Added the Guohao history QQ group 1109714588 to the footer and About page of ghc.hachile.org.
Tongji Lean Muscle Club and Furpony Institüt added
Added Tongji Lean Muscle Club 1128552670 to Campus and Interests and Furpony Institüt 1130961239 to the MLP category on groups.hachile.org. Totals: 107 QQ groups and 111 online communities.
Video anomaly detection survey notes published
Published video anomaly detection survey notes on blog.hachile.org, covering methods from DNNs to MLLMs, anomaly understanding, and open reading questions.
Tongji QQbot discussion group added
Added the Tongji QQbot discussion group 1128188987 to the Campus and Interests category on groups.hachile.org, bringing the category to 31 groups, the directory to 105 QQ groups, and the total to 109 online communities.
AI group two number added
Added 832504586 for Tongji AI and LLM group two and enabled copying in the directory and exhibition. Group three for academic discussion remains 689315680, and group four remains 1127773531. Community totals are unchanged.
Pony cooking discussion group added
Added the pony cooking discussion group 1130319686 to the MLP category on groups.hachile.org, bringing the category to 29 groups, the directory to 104 QQ groups, and the total to 108 online communities.
AI academic discussion group number confirmed
Confirmed 689315680 as Tongji AI and LLM group three for academic discussion and updated the directory and exhibition. Group two awaits its number so that it does not reuse group three’s number. Community totals remain unchanged.
Community categories reorganized and AI group roles updated
Reorganized the campus, early, and MLP categories on groups.hachile.org and added two groups managed by Xiao Wu. Clarified the AI discussion, academic, and Tongji-only group roles, corrected 1127773531 to group four, and left group three awaiting its number. Totals: 103 QQ groups and 107 online communities.
Featured communities updated and AI groups expanded
Updated both the Tongji Guohao and Tongji AI and LLM communities on groups.hachile.org to 2,000+ members, described their constituent groups, and changed the third feature to “Stay tuned.” Added AI groups two and three, bringing the totals to 100 QQ groups and 104 online communities.
Pony philosophy discussion group added
Added the pony philosophy discussion group 451879743 to the pony directory on groups.hachile.org, bringing the totals to 25 pony communities, 98 QQ groups, and 102 online communities.
Tongji University Cute Nanliang Research Center added
Added Tongji University Cute Nanliang Research Center 1129801220 to groups.hachile.org, bringing the directory to 97 QQ groups and the total to 101 online communities.
Tongji account proof simplified into a standalone site
Created tj.hachile.org with only proof code generation and verification, without campus navigation, search, or other sections. It reuses the secure backend for anonymous one-time proofs; authentication will open after university approval. The site directory entry was updated accordingly.
Tongji navigation and account proof template launched
Created tongji.hachile.org, organizing campus services, study resources, and community links with reference to USTC navigation, and added a secure backend template for one-time Tongji account proofs. Authentication will open after university application approval; the site was also added to the directory.
Online community total updated to 100
Included the WeChat public account, Discord community, Telegram group, and QQ channel in the groups.hachile.org total: 96 QQ groups plus four communities on other platforms.
Tongji AI and LLM community member count updated
Updated the displayed member count of the Tongji AI and LLM community to 1,000 on the groups.hachile.org homepage and featured community exhibition.
tongji.qq.life development group added
Added the tongji.qq.life development group 1121262961 to the newly added directory on groups.hachile.org.
Four pony discussion groups added
Added pony discussion groups for studying, research, competitions, and internships to the pony community directory on groups.hachile.org.
Pony drawing group added and introduction formatting updated
Added the pony drawing group 943571955 to the pony directory on groups.hachile.org and changed the closing sentence to “I am everywhere, I know everything.” using the same paragraph style as the preceding text.
Personal introduction and purpose added to the community homepage
Added an introduction to my online identities, communities, and reach at the start of groups.hachile.org, along with personal reflections on connection, continuity, and digitizing myself.
Nine QQ groups added to the community directory
Added nine QQ groups to groups.hachile.org and noted that I still manage some groups whose ownership has been transferred.
HDFZ QQ channel added
Added the HDFZ QQ channel to groups.hachile.org (Tencent channel ID: hdfzpd2222).
wplace discussion group added
Added the wplace discussion group 1025330162 to the newly added directory on groups.hachile.org.
Original Chinese typography restored
Reverted the unified Chinese font across Home and restored the previous typography while keeping Site in personal sites.
Site added to personal sites and Chinese typography unified
Added site.hachile.org to Home’s personal sites and unified Chinese text with the font used in the hero introduction.
Other-identity card typography update
Reduced the description and QQ number text in Home identity cards to 60% of their previous size while keeping account names unchanged.
Hong Kong pony discussion group added
Added the Hong Kong pony discussion group 1126362557 to the pony community directory on groups.hachile.org.
Four discussion groups added to the community directory
Added the pony and furry culture, pony hypnosis, pony tulpa, and lucid dreaming discussion groups to groups.hachile.org.
Web pony movement and sizing corrected
Fixed stationary-action drift on pony.hachile.org: walking stays level and dragging uses flight. All actions support both directions and retain the last facing; GIFs render at native pixel size without action-dependent or mobile scaling.
A friend’s comment added to the community archive
Added a 2025 group-chat comment to the groups.hachile.org homepage, noting the numbers of groups created and active at the time.
Pony added to the site directory
Added pony.hachile.org to The Hachile Project directory and established that future sites should be listed there when launched.
Skyblue Mornbreeze pony homepage launched
Launched pony.hachile.org with a scrolling pony profile, links to creative work, layered reveal effects, a draggable desktop pony, and five official Bandcamp players.
Sky display font returned to regular weight
Removed synthetic bold from Equestria lettering in English mode on desktop and mobile.
Equestria map background and waves updated
Used the new background and supplied boat image, and extracted three original wave patterns to drift randomly across the sea from left to right.
Guohao Class of 2026 group added
Added the Tongji Guohao College Class of 2026 group to groups.hachile.org and marked it as not accepting new members.
Original Equestria map restored
Switched to the untouched newnewmap artwork, leaving its waves static; restored the original smoke and sailboats, unified Chinese typography, and retraced train routes along visible rails.
Equestria map animation refinements
Cleaned up static sea waves and leftover volcano smoke, moved both sailboats, and made each train car follow the railway curves independently.
Continuity added to Hachile purpose
Added the idea of staying in touch with old friends and keeping community relationships alive to The Hachile Project purpose.
Sky map animations refined
Shrank the sailboats, animated the original map waves and volcano smoke, and replaced the train with a multi-car sprite traveling between railway stations.
More discussion groups added
Added five QQ discussion groups to groups.hachile.org and updated the /mlpol/ backup group name.
Hachile Bot community link added
Added QQ group 822082293 to the Hachile card on bot.hachile.org with click-to-copy support.
Ponylonia project group added
Added The Ponylonia Project QQ group 291927355 to ponylonia.hachile.org.
Single-track player added to Sky
Added the official Bandcamp embed for Equestria's Finest to the lower-left corner of the Sky map, including mobile, and updated the privacy notice.
Official music links added to Sky
Added official Bandcamp links for five songs to the lower-right corner of the Sky map and mobile page without hosting audio on the site.
Hachile purpose added
Added a purpose statement about online identities, communities, and connections to The Hachile Project homepage.
More animated details on the Sky map
Added drifting sea waves, moving volcano smoke and Neighagra Falls, plus a train that periodically follows the railway to Baltimare.
Three new destinations on the Sky map
Added site links at Crystal Empire, Griffonstone, and Appleloosa, and removed the old compass, sailboats, red arrow, and dragon from the background map.
The Hachile Project showcase launched
Launched site.hachile.org with a directory of Hachile sites, direct links, and a copy of the Home changelog.
Project Ponylonia showcase launched
Launched ponylonia.hachile.org to showcase the robot pony Bot, the personal crossover system vision, and Hachile Project.
Portal entry descriptions expanded
Expanded the CV and personal homepage entry descriptions on Hachile Portal and adjusted card height.
Animated Sky map
Added drifting clouds and gently bobbing sailboats to the Equestria map, respecting reduced-motion preferences.
Home card layout and identity update
Unified site-card title sizes and text spacing, added the Pegasus Bluie identity, and arranged all five identity cards in one desktop row.
Bot deployment config project added
Added the config-for-qq-bot project link below the bot showcase on bot.hachile.org.
Quick introduction added to the portal
Added a link to hachile.org/gunpowder on the Chinese and English desktop and mobile portal pages, and restored the previous entry descriptions.
Community and Bot links added to Sky Ponyville
Added groups.hachile.org and bot.hachile.org links at the top of the Sky Ponyville directory, including the mobile page.
Toolbox link added to Sky map
Added the tools.hachile.org toolbox link at Baltimare on the Sky map and updated both desktop and mobile pages.
Square gallery grid and search
Combined all 64 gallery images into a square-thumbnail grid with five columns on desktop, plus image search and placeholder captions.
Gallery return links updated
Changed both gallery.hachile.org return links to home.hachile.org and removed the ALPHA footer label.
Gallery image expansion
Added 55 images from pic to gallery.hachile.org, keeping the existing works and click-to-enlarge view.
Standalone mobile pages launched
Added Chinese and English mobile pages without a sidebar, and displayed home.hachile.org below the site name at the top left.
English CV page launched
Replaced the old top return link on cv.hachile.org with a language switcher and added a complete English CV page.
Community archive update
Updated the groups.hachile.org directory with more QQ groups and cross-platform community links.
Community and bot links added
Added a groups.hachile.org link below the community list and a bot.hachile.org link below other identities.
Community archive launch
Launched groups.hachile.org with the QQ groups listed on the old site, the WeChat account name, and a dedicated exhibit for three featured communities.
Portal heading and entry card update
Added Chinese and English welcome headings to Hachile Portal, reduced the introduction text size, and shortened the three entry cards.
Hero avatar and introduction update
Resized and repositioned the hero avatar, removed its gradient and corner label, moved Sky into personal sites, and updated the introduction and interests.
Entry page name update
Renamed the browser tab to Hachile Portal on the Chinese and English desktop and mobile entry pages.
Sky map navigation update
Canterlot on the Sky map now opens the matching Chinese or English home.hachile.org page.
Avatar ring gradient update
Kept the avatar image intact, added a dark-to-white gradient only to the left crescent, and displayed the full avatar separately on mobile.
CV homepage link update
Updated the personal homepage link in the cv.hachile.org footer to home.hachile.org.
Entry page text update
Removed the top label from the Chinese Hachile entry page on desktop and mobile.
Icon and avatar refinements
Faded the avatar around its circular edge, refreshed contact and social icons, and added a community link.
Site and community display update
Added Tools and social links, and updated the hero avatar and community cards.
Homepage layout update
Simplified navigation and site cards, enlarged the hero avatar, and moved the changelog below discussions.
Bilingual interface and on-site discussions
Renamed to Gunpowder Central, with light and dark modes, an English page, icons, and an on-site discussion board.
First formal release
The first formal release of the Hachile.org network. Home adopts a documentation-style layout and brings together my introduction, sites, resources, communities, contact details, and discussion board.
The earliest version has moved to old.hachile.org。
Social media SOCIAL