Thanks to everybody for providing information here.
My file started at July 25 and I have got the letter to submit passport.
I am planing to go buffalo directly to submit passport and finish landing in the same day. Waiting is like a knife: it cuts you slowly and a bit harder and harder, you watch your blood bleeding and never know when to die and how to live.
If someone who has got the letter to submit the passport and has got a US visa and driver's license. Feel free to contact at baggio_liao@hotmail.com