Zhouyi XiaoxiaoPhD researcher · first-passage times & AI agents · AI lead

Next · UKAIRS 2026, Edinburgh · 24–25 Nov 2026

The story so far, as a random walk with shortcuts.

Every event below is an absorbing target. Walkers leave Tianjin, wander the years, and sometimes take the long-range jumps that were actually taken — 3+1 to Bristol, maths to AI, research to a company. Watch where the light gathers.

The 10-second version

So far · Nº 01 · as at 28 Sep 2026
Who
PhD researcher, University of Bristol — first-passage times of random walks and the evaluation of AI agents · AI lead (R&D), Yuexin International
Out
  1. First-author paper accepted at UKAIRS 2026 — poster #181, Edinburgh, 25 Nov
  2. Single-author paper submitted to Physical Review E, Jul 2026
  3. Public reproduction archive v1.3.0 · 46 Lean-checked theorems (external link)
Reach
  1. Research & study
  2. AI
  3. Company products
  4. Stage & design
  5. Campus
  6. Media
  7. Making
Developed print of the plate (static) Developed print of the plate (static)
  • maths → AI
  • 3+1: Tianjin → Bristol
  • research → company
  1. Tianjin · maths — Mathematics and Applied Mathematics, Tianjin University, Aug 2021 – Jun 2025. Completed.
  2. TJU maths guide — The Tianjin University maths guide, 22 Jul 2023 – 18 Dec 2025. Live.
  3. HKUST exchange — An exchange year at HKUST, Sep 2023 – Jun 2024. Completed.
  4. Video diary — A camera roll as a diary: 3,947 videos, Sep 2023 – Aug 2026. Completed.
  5. JLL Chengdu · intern — Research intern, JLL Chengdu, Jul – Sep 2024. Completed.
  6. Bristol MSc — MSc Engineering Mathematics, University of Bristol, Sep 2024 – Sep 2025. Completed.
  7. LiveX AI · research — LiveX AI — Researcher (Internship), 4–16 Aug 2025. Completed.
  8. PhD begins — PhD in Engineering Mathematics, University of Bristol, 3 Nov 2025. Ongoing.
  9. Graduate Teacher — A Graduate Teacher from the first term, 14 Nov – 16 Dec 2025. Completed.
  10. PGR rep — PGR representative, Engineering Mathematics, 1 Dec 2025 – 15 Jul 2026. Completed.
  11. Enterprise Fellow — Early Career Enterprise Fellow, 2026, 23 Dec 2025. Awarded.
  12. Research atlas — A public, bilingual research atlas, 25 Feb 2026. Live.
  13. AI-native method — An AI-native way of doing mathematics, 25 Feb 2026. Ongoing.
  14. SocialOS · agent hack — SocialOS: 1,222 commits in five days, 5–9 Mar 2026. Completed.
  15. London Cuts, 19–28 Apr 2026. Live demo.
  16. ime-eval — ime-eval: a harness for keyboard-friendly prompting, 28 May 2026. Completed.
  17. CatchMouse — CatchMouse, rebuilt for Apple Silicon, 29–30 May 2026. Shipped.
  18. Yuexin Intl · AI lead — AI lead (R&D), Yuexin International, Jun 2026. Ongoing.
  19. Stand-up · 3 Jun — Seven minutes of stand-up about a maths PhD, 12 Feb – 3 Jun 2026. Performed.
  20. AI gateway · SSO — An internal AI gateway with Feishu single sign-on, 10–13 Jun 2026. Live.
  21. Festival of Enterprise — PechaKucha at the Festival of Enterprise, 10 Jun 2026. Presented.
  22. Bilingual subtitles — A home-built bilingual subtitle pipeline, 10 Jun – 27 Aug 2026. Shipped.
  23. MWC Shanghai — MWC Shanghai 2026, 24–26 Jun 2026. Attended.
  24. Pro Agent Bridge, 27–29 Jun 2026. In daily use.
  25. 13 roles · 3 schools — 2026–27: thirteen roles across three schools, 16 Jul 2026. Ongoing.
  26. Spectral paper — Working paper: spectral diagnostics for encounter–reaction models, Jul 2026. Working paper.
  27. Trust Joint 2.0 logo — ‘Trust Joint 2.0’: a logo system argued into existence, 23 Jul 2026. Completed.
  28. Governance platform — An enterprise platform for governed AI access, 25–31 Jul 2026. Live.
  29. PRE paper · folds — Geometry-controlled folds — submitted to Physical Review E, 30 Jul 2026. Submitted to Physical Review E, Jul 2026.
  30. LLM primer · 93 min — ‘From SMS to Intelligent Channels’: a 93-minute LLM primer, 5 Aug 2026. Delivered.
  31. UKAIRS accepted — Accepted: the first AI paper, 11 Aug 2026. Accepted.
  32. WeChat studio — A WeChat content studio, 29 Aug 2026. Launched.
  33. Career Compass — Zijing Career Compass, 31 Aug – 5 Sep 2026. Live.
  34. WWC Madrid — WWC 2026, Madrid, 13–19 Sep 2026. Attended.
  35. YueXin AI Assistant — YueXin AI Assistant — web and Windows, 21 Sep 2026. Live.
  36. Careers blog feature — ‘From strawberry patch to PhD’, 21 Sep 2026. Published.
  37. Programmable peaks — Programmable multimodality — manuscript in preparation, 23 Sep 2026. Manuscript in preparation.
  38. Desktop agent — From chat window to desktop agent, 23 Sep 2026. In development.
  39. UKAIRS 2026 · first reached at step 19 — UKAIRS 2026, Edinburgh, 24–25 Nov 2026. Scheduled · 25 Nov 2026.

Arrival times

UKAIRS 2026, Edinburgh

  • via shortcut
  • diffusive
  • no-shortcut reference

Static histogram of the same run

absorbed
15,978
π_sc
34%
t₁ · t₂
119 · 1,612

BIMODAL

Fig. 0 — The Plate Walkers leave the origin and drift toward whatever you choose to measure. Every event is a target; switch the shortcuts on and the arrival-time histogram splits in two. Toy model: walkers drift toward the event you choose; shortcuts jump. Red = took a shortcut (fast). Silver = wandered the long way. The paper's exact ring model is in chapter 01.

Counts so far

Aggregates only. Every number links to its evidence.

01–12

Chapters

Each chapter is one lane of the plate, and each opens with its own first-passage figure.

  1. 01 · Research & study

    First Passage首达

    Why can a single target produce two arrival peaks?

    • Geometry-controlled folds — submitted to Physical Review E ·
    • Why a second peak is born — and dies ·
    Measure on the plate

  2. 02 · AI

    Skipping the IME?跳过输入法？

    Can you skip the input method and just type pinyin to an AI agent?

    • The key finding: toneless pinyin erases homophones ·
    • Accepted: the first AI paper ·
    Measure on the plate

  3. 03 · Company products

    The Engine Room引擎室

    Since June 2026, AI lead (R&D) at Yuexin International: the internal AI gateway, an enterprise platform for governed model access, the staff AI assistant, and the connectors that let agents work inside the company's own tools.

    • AI lead (R&D), Yuexin International ·
    • YueXin AI Assistant — web and Windows ·
    Measure on the plate

  4. 04 · Stage & design

    On Stage展台

    How a messaging company learns to present itself as an AI company: a first overseas brand push, a logo argued from four sketches into one mark, print kits for two trade floors, and a 93-minute primer that taught the LLM industry through SMS.

    • WWC 2026, Madrid ·
    • ‘Trust Joint 2.0’: a logo system argued into existence ·
    Measure on the plate

  5. 05 · Campus

    Teaching教学

    A Graduate Teacher from the first month of the PhD: problem classes, labs, marking and tutorials — now thirteen teaching roles across eleven units in three schools, run with the same AI-native habits as the research.

    • 2026–27: thirteen roles across three schools ·
    • A Graduate Teacher from the first term ·
    Measure on the plate

  6. 06 · Campus

    Representing代表

    Speaking for other PhD students, and for the university: two years as Engineering Mathematics PGR rep, a scholarship reading panel, open days, a science festival — and seven minutes of stand-up about doing a maths PhD.

    • PGR representative, Engineering Mathematics ·
    • Seven minutes of stand-up about a maths PhD ·
    Measure on the plate

  7. 07 · Campus

    Map in. Traps out.地图进，布点出

    First-passage maths turned into a product: BioPath takes a site map and a budget and returns where to put the traps — with the proof attached.

    • Early Career Enterprise Fellow, 2026 ·
    • The BioPath platform: map in, traps out, proof attached ·
    Measure on the plate

  8. 08 · Media

    Signal信号

    A camera roll kept since 2023, a WeChat studio launched in August 2026, LinkedIn as a public notebook, a home-built bilingual subtitle pipeline — and the long making-of of the site you are reading.

    • A WeChat content studio ·
    • A camera roll as a diary: 3,947 videos ·
    Measure on the plate

  9. 09 · AI

    Westward向西

    Summer 2025: a university programme in Silicon Valley and a two-week research internship at LiveX AI, where the question was how to turn messy manuals into Markdown an AI can actually use.

    • LiveX AI — Researcher (Internship) ·
    • Silicon Valley Entrepreneurship Program ·
    Measure on the plate

  10. 10 · Making

    Workshop作坊

    Things built in the gaps: a maths guide for the next cohort, a travel-story studio born at a hackathon, a cursor that jumps between screens, bridges that let AI agents hand work to each other — most of them made so that someone else could move faster.

    • London Cuts ·
    • SocialOS: 1,222 commits in five days ·
    Measure on the plate

  11. 11 · Research & study

    Roots来路

    Tianjin, Hong Kong, Chengdu, Geneva, Bristol: a maths degree with an oar in hand, an exchange year that turned the maths computational, a first internship, and the 3+1 route — the first shortcut, which skipped a year.

    • Mathematics and Applied Mathematics, Tianjin University ·
    • The 3+1 route: the first shortcut ·
    Measure on the plate

  12. 12

    Now & Next此刻

    As at the build date: a poster to present in Edinburgh, a paper submitted to Physical Review E and another in preparation, a desktop agent in development, a new teaching year and a second year as PGR rep.

    • UKAIRS 2026, Edinburgh ·
    • Geometry-controlled folds — submitted to Physical Review E ·
    Measure on the plate

∂ The absorbing boundary

You have arrived. Say hello.

Every walker ends here. Write about research, AI products, teaching, speaking — or just to say hello.

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