Xijia Feng in front of the Hall of Prayer for Good Harvests, Temple of Heaven, Beijing.

@fengxijia

Hi there.冯茜嘉

Ph.D. candidate, National University of Singapore

Work worth doing should put people first: expand what they get to experience, and make them happier.

LLM systemsSecurityRock n RollVideo gamesDrawingPsychology

No man is an island

Every man is a piece of the continent.

lighter

No work is really important 🤡

Every man should play video games 🤗

hooked

Latest

Finished The Blood of Dawnwalker
3/5. Passable.
Finished Kingdom Come: Deliverance II
5/5. Team Hansry ❤️‍🩹🤤
Real masterpiece. Warhorse might as well be the Czech tourism board.
Finished Cyberpunk 2077
4/5.
Ending: the surgery failed. Back to Earth with six months to live 🙃
Finished The Witcher 3
5/5. Masterpiece.
Ending: Ciri becomes a witcher. Geralt and Yennefer settle down at Corvo Bianco.
Finished Hogwarts Legacy
AAAI 2026, Oral
“When 🙂 Turns Hostile”. Emojis as a channel past safety alignment.
Trip to Australia
Melbourne and Sydney. I love Melbourne!
BeCool & CoAI, Tsinghua
Visiting researcher.
Trip to Korea
Seoul and Busan.
Trip to Japan
Osaka, Kyoto and Tokyo.

Built

PaperFigureLibsince 2026·09

A gallery of 56,000+ figures and tables cropped from 4,400+ papers at the top computer science venues, 2021 to 2026, updated weekly. Each one is labelled by type and linked to its paper, venue and award. 4k+ visitors a month.

Filter by figure type, venue, award tier or drawing style, search captions and arXiv ids, and share any view by URL. Made for picking a reference figure before drawing one, or before asking a model to.

PythonPyMuPDFVision LLM
paperfigure.net → github.com/fengxijia/PaperFigureLib →
CozyPetsince 2026·04

A desktop pet for macOS that also starts your work. Each character carries its own persona config; dialogue runs through Gemini, GPT or Claude, and voice through ElevenLabs, so it can read a workflow or a note aloud in that character's voice.

One click on a saved workflow opens every app, page and file that job needs.

macOSLLMElevenLabsYAML
github.com/fengxijia/CozyPet →
LoveAuditsince 2026·01

An LLM walks you through your own relationship and tells you what it sees. Anonymous, no account, nothing stored server-side. About 2k visits so far.

The framework scores value alignment, communication, conflict handling, boundaries and long-term commitment.

Next.jsFastAPILLM
github.com/fengxijia/loveAudit →
Doro Communitysince 2025·10

A peer support community for graduate researchers. Founder, rule maker and content creator. Researchers who came through depression or anxiety share what worked with people going through it now.

The site carries CBT self-help material, explainer videos and posts on what actually comes up: failed experiments, advisor relationships, paper pressure, isolation, procrastination.

What people report there is also what the peer-support simulation was built to model.

CommunityCBTPeer support

Playlist

  1. 0121st Century BreakdownGreen Day
  2. 02Jesus of SuburbiaGreen Day
  3. 03¡Viva la Gloria!Green Day
  4. 04With MeSum 41
  5. 05Waiting On a Twist of FateSum 41
  6. 06LandminesSum 41
  7. 07StrawmanYu Takahashi 高橋優
  8. 08スペアキーYu Takahashi 高橋優
  9. 09ルポルタージュYu Takahashi 高橋優
  10. 10Plug in BabyMuse
  11. 11HysteriaMuse
  12. 12Time Is Running OutMuse
  13. 13本能Sheena Ringo 椎名林檎
  14. 14丸ノ内サディスティックSheena Ringo 椎名林檎
  15. 15ギャンブルSheena Ringo 椎名林檎
  16. 16Color Your NightLotus Juice / Azumi Takahashi 高橋あず美
  17. 17城市Anpu 焦安溥
  18. 18Semi-Charmed LifeThird Eye Blind
  19. 19要是你又不高兴了Wowkie Da 大张伟
  20. 20万物盛开法则Wowkie Da 大张伟
  21. 21香水 (live)Mayday 五月天
  22. 22一颗苹果Mayday 五月天

Off duty

  • Video games. Kingdom Come: Deliverance II, The Witcher 3 (team Yennefer), Cyberpunk 2077, The Blood of Dawnwalker, Hogwarts Legacy.
  • Music (Rock). Green Day, Sum 41, Mayday, Wowkie Da, Yu Takahashi, Muse, Sheena Ringo, Anpu.
  • Psychology. To know yourself and human beings better.
  • Harry Potter. Grew up alongside the books. They were there through the happiest years and the hardest ones.

CV

Education

since 2023
Ph.D., Electrical & Computer Engineering
National University of Singapore · advisor Biplab Sikdar, IEEE Fellow and Head of ECE
2021-22
M.Sc., Electrical Engineering
National University of Singapore · advisor Tong Heng Lee, former Vice President for Research
2016-20
B.Eng., Automation
Harbin Institute of Technology · School of Information Science and Engineering

Experience

2025-26
Visiting Researcher
BeCool and CoAI Group, Tsinghua University
2022
Student Researcher
Temasek Laboratories, National University of Singapore
2022
Research Associate
Nanyang Technological University

Awards

2026
Oral presentation, AAAI 2026
top ~5% of accepted papers
2020
Outstanding Student and Outstanding Graduate
Harbin Institute of Technology