回複：mikehuang, please come in (about 140 REF)

In fact, I found the it from my Account and E-mail as the following:

On AugustXX,2006, we mailed a notice requesting additional evidence or information in this case. The notice explains in detail what additional material is needed. If you have questions about the notice, what is required, or if 30 days have passed and you have not received the notice. Please contact the service center where you ted your application during business hours.

I have not got the notice yet. It goes to my attorney first. I will let you know later.