I became a fan of billiards in my junior year. Here is a picture of me playing billiards.

I enjoy (watching) standup comedies. Checkout Comedy Club China for best English comedies in Beijing!

I visted BARC (Basic Algorithm Research Copenhagen) for two months. It was such a lovely place full of friendly people. See here and here for pictures.

I used to do competitive programming. My Codeforces handle was WuHongxun. I was an administrator of Univsersal Online Judge. (We have the most challenging puzzles among all online judges in China!) Here is my account on UOJ.