You can reach me at:

Address:

Tsinghua University, FIT 4-609
Beijing 100084, P.R.China

Online:

Email: mathzqy [at] gmail [dot] com
or zhang [at] itcs [dot] tsinghua [dot] edu [dot] cn
MSN: zhang [at] zhiqiang [dot] com

Phone:

+86-10-62797304(Office number at Tsinghua)
+1-734-7632040(Office number at Ann Arbor)