Travel in chengde mountain resort, 3 days, can you briefly introduce it?

Chengde mountain resort, also known as "Chengde Palace" or "Rehe Palace", is a world cultural heritage, a national AAAAA tourist attraction, a national key cultural relic protection unit and one of the four famous gardens in China. The villa is located in the north of Chengde city center, Hebei province, on the narrow valley on the west bank of Wulie River. It was the place where the Qing emperors used to spend the summer and handle government affairs. The summer resort is divided into four parts: palace area, lake area, plain area and mountain area. The villa was built in 1703, and was announced as the first batch of national key cultural relics protection units in 196 1. 1994 is included in the World Heritage List.