Mengla County is located in the southeast of Xishuangbanna Dai Minority People's Autonomous Prefecture, borders on Laos, has an area of 7056 square kilometers and population of 180 thousand. The nationalities living in Mengla include Han, Dai, Hani, Yao, Zhuang and Bulang. The highest point in Mengla is Heishuiliangzi Peak, where the altitude is 2023 meters, the lowest point is where Nanla River converges into the Mekong, elevation there is 480 meters. Mengla has a tropical climate, annual average temperature is 21.1 degrees Centigrade, around 60% of total area is covered with dense tropical rainforest. Rice, natural rubber, cane sugar and tea abound in this county. Mengla is also a richly mineralized district, rock salt, gypsum, gold, silver, copper, iron and lead have been prospected to be with workable reserves, especially rock salt, reserves hit 25 billion metric tons. The first international port of Xishuangbanna, Mohan, was opened on China-Lao border in this county, which has become an quite busy place as trade and tourism exchange between two countries develop.