## Past Events

- 2023 Summer School on Algebra and Number Theory (July 31–August 18, 2023)
- Satellite Conference in Number Theory of the International Congress of Basic Science (July 10–14, 2023)
- MCM–YMSC Online Number Theory Seminar (2020–2022)
- Franco-Asian Summer School on Arithmetic Geometry (May 30 – June 3, 2022)
- Jintan Number Theory Conference (June 26–30, 2021)
- Conference on Arithmetic Geometry in honor of Luc Illusie (June 7–11, 2021, with Lei Fu and Fabrice Orgogozo)
- Séminaire de Géométrie
Arithmétique Paris-Pékin-Tokyo (2012–2020)
- International Conference on Arithmetic Geometry in honor of Professor Michael Rapoport's 71st Birthday (March 18–22, 2019)
- Conference on Arithmetic Algebraic Geometry in honor of Professor Nicholas Katz's 71st Birthday (May 11–15, 2015)
- Summer Workshop on Arithmetic Geometry (July 22–25, 2013, with Shenghao Sun and Yichao Tian)
- Workshop on Perfectoid Spaces (August 6–10, 2012, with Yichao Tian)
- Workshop on Faltings' theory of almost étale extensions (August 3–14, 2009, with Yichao Tian)

## Teaching

- Algebra I (Fall 2019, 2021, and 2022, notes)
- Algebraic Geometry I, II (Fall 2020, notes for the first two chapters)
- Algebra III (commutative algebra, Spring 2019, summary)
- Algebra II (homological algebra, Spring 2015–2018, notes)
- Algebraic Number Theory 2 (Fall 2014 and 2016, Tsinghua, notes)
- Geometry of modular curves and arithmetic applications (Summer 2012, Tsinghua, with Yichao Tian)
- Basic Algebraic Geometry (Summer 2011, Tsinghua, with Xinwen Zhu)
- Abelian Varieties (Summer 2010, Tsinghua, with Yichao Tian, incomplete notes)
- Teaching at Columbia (2008–2012)