I am back from the wonderful trip in Nanjing. Allow me sometime to catchup with the blog. The intensive 3 days in Nanjing and the following extension trip were full of fun and party (at night). I did spend two days after that to catch up with my family – Yifan and Wendy, and yesterday, I went to the SJTU to give a lecture. In short, this is maybe the longest period of time I paused my little blog, and I will catch up also, and I will tell you the wonderful stories of my trip in Nanjing, and the wonderful people I met.

So, stay tuned.