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city Jin Jun fortress Mongol army The change of self
12-31
Mao Wenlong Emperor Tai Chi Yuan Chonghuan The change of self Post gold Ming dynasty
12-16
![In ancient times, why did you have to lay down the city? Can't you get around it?[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)
