This cache is hiden in " The Huanghuacheng Lakeside Great Wall Reserve ".

The Huanghuacheng Lakeside Great Wall Reserve is located in Jiuduhe Town, Huairou District of Beijing City. Some 70 kilometers from downtown Beijing.
More infomation: http://www.huanghuacheng.com/english
Ticket: RMB 34
It's in a big and steep crack. The last road is too difficulty to climb. Good luck to you!
PS: You can walk on about 500meters and out of the Reserve area, you will find my another cache GC1Z01T:Traverse the QuanShuiGou valley . If you find GC1Z01T frist , you can find this one after you buy ticket.
ATTENTION: There may be some raptor live there. I heard some deep voice(like clap wings) when I hide it,but not sure what is it... ;) So, you MUST be very careful.

Cache here!!! Who dear to challenge???

Another instruction:

BTW: I forgot put a pen in this cache.