The Yuanshangdu ruins are located in the territory of Ximeng Zhenglanqi. In 1260, Kublai Khan ascended to the throne and opened the long history of the Yuan Dynasty. After the Yuan Dynasty was set in Beijing, it was used as a companion capital, also known as Shangjing or Shanghai Jing. The site of Yuanshangdu is square, about 9 kilometers long, divided into the outer city, the imperial city, the palace city triple, of which the palace is the summer summer place for the emperor and the concubines, the imperial city and the outer city are the residence of the officials. At the end of the Yuan Dynasty, the upper capital city was burned in several wars...