The site of the city is divided into the north city and the south city, which is generally in Japanese shape. The city of the north city is the layout of the city during the Cao Wei period and the construction of Cao Cao. North and West Qihuali, North and South Wuhuali, there are seven gates in the outer city, three in the south are Guangyangmen, Yongyangmen and Fengyangmen, two in the north are Guangdemen and Anus, one door each, Jianchunmen and Jinmingmen respectively