My flight to Xian is on Sep 16 and an arrival at Xian airport will be at 12:15 pm. The next morning I must fly to another city so I have only one tight day to visit Xian. I'm upset because city wall will close at 17:00 because probably I will not be able to return to the center of the city from the terra cotta museum earlier than 16:30 (with a taxi). I wish there (city wall) would be an extended summer time so it could close at 19:00 PM instead of at 17:00 PM on Sep 16 :) Because it is still 2 hours left till getting dark...