[Apologize] I will resume commonly access and answer questions by Oct. 20th.

Dear users, I sincerely apologize that I can not access this forum and answer your questions for bit of time. I have been pushing for a deadline of a paper currently, and I will resume to commonly access this forum and answer questions by Oct. 20th. I am really sorry for the inconvenience I caused for you, my colleagues will answer most of the questions during this time. If the questions are adressed to me, please wait until Oct. 20th. Sorry again. :( Best, Chao-Gan