Chengede, a famous cultural city with about 300 years history, used to be the second political center in the Qing dynasty, with the largest extant royal garden in China, is a city 250 kilometers northeast of Beijing.It was the ideal place to avoiding the summer heat and hunting for emperor in Qing Dynasty. Qing emperor Kangxi and Qianlong constructed a summer palace in Chengde, that gradually grew into plans for 36 constructions (temples, palaces, pagodas etc.). Nowadays, Chengde not only still has these cool summers , it retains the memories of this Qing invasion with some of the best Imperial Garden architecture in China.