teaching assistant, department of mathematics, huazhong normal university, wuhan, china, 9.2007-1.2009.
teaching assistant, the school of mathematics, beijing normal university, beijing, china, 9.2009-1.2010.
visiting scholar, department of mathematics, the university of wisconsin at milwaukee, usa, 9.2010-9.2011.
im体育 lecturer, department of mathematics, huazhong normal university, wuhan, china, 9.2012-.
im体育 the harmonic analysis and complex analysis international conference, 8-10 june 2008, fujian normal university, fuzhou, china.
im体育 international conference on harmonic analysis and partial differential equation with application, 27-30 may 2009, beijing normal university, beijing, china.
international conference on harmonic analysis and approximation theory, 20-23 november 2009, beijing normal university, beijing, china.
analysis and applications: stein conf. may 2011, princeton university, usa.
international conference on harmonic analysis and partial differential equation, 16-20 may 2012, nanjing university, nanjing, china.
im体育 international conference on harmonic analysis and its application. 11-16, oct. 2012, zhejiang normal university, jinhua, china.