Heavy overlapping mountains, Ququhuanhuan Road, Dingding Dongdongquan, high and low trees heard people say that Hangzhou's Jiuxi smoke tree is the most beautiful place in autumn, here you can have the most beautiful late autumn; Jiuxi is on the west side of Yanxialing, and on the south side of Longjing Mountain. The road is rugged and twisted nine times before it flows out, so it is called Jiuxi. Here, the grass is lush, the people are inaccessible, the beauty is quiet, but there is no world.