Introduction to Menglian: Menglian Dai Lahu and Yi Autonomous County (referred to as Menglian County) is an important autonomous county in Pu'er City in the southwest of Yunnan Province. It is an important gateway to Southeast Asian countries such as Myanmar and Thailand. It is a provincial-level open port. Menglian County is connected to Qixian County in the east, Ximeng and Yi Autonomous County in the north, and Myanmar in the west and south. The border line is 133.399 kilometers long. As of 2012, Menglian County has jurisdiction over 3 townships and 3 towns, with an area of ​​1,893.42 square kilometers; the household registration is 127,870. The homonym of Menglian is a "good place to find", and it is known as "the emerald in the side" and "the hometown of the dragon blood tree". The tourism resources are mainly natural resources and human resources, mainly including Menglian Dajinta, Menglian Xuanfu Department, Hummer Hot Spring, and Lafu Black Mountain Scenic Area.