May 28, 2021, Obstructions to local-global principle, In a conference to celebrate the 50th birthday of Professor Yingpu Deng, AMSS, scanned.
May 21, 2021, Quadratic diophantine equations over function fields, In 10th Finite fields and its applications, Luoyang, slides.
May 27, 2020, Rational points on varieties: an introduction, Invited by Yanbin Pan, AMSS, scanned.