A stream of bluish water bends towards the east and cuts the peninsula into the shape of a gourd the tropical rain forest is a forest biological system with the most abundant life forms on earth and Xishuangbanna is such a survived oasis on the North Tropic and the only large stretch of tropical rain forest in China. Xishuangbanna Tropical Botanical Garden (XTBG)  is the largest manmade botanical garden with the richest life forms established on this aftermost stretch rain forest on the Chinese territory.

Founded in 1959, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences (CAS) is located at 21º55' N, 101º15'E, covering an area of 1,100 ha. Over 13,000 species of tropical plants are well preserved in its 35 living collections. XTBG is a comprehensive research institution engaged in biodiversity conservation and sustainable uses of plant resources, focusing on forest ecosystem ecology, conservation biology and resource plant development.

One of the tributaries of the Asian Danube Mekong River - the Luosuo River cuts the topography here into Gourd peninsula  in Menglun Town Mengla County of Xishuangbanna. The peninsula situates in the northern edge of the Southeast Asian tropical areas, and the natural condition there is quite favorable; therefore, large blocks of rain forests are preserved in this part. These make the place become an ideal place for botanical research, plant seed resource preservation, technical development, science popularization and tourism. The world famous Xishuangbanna Tropical Botanical Garden under the Chinese Academy of Sciences just selects its site on this beautiful island, and makes the island enjoy fantastic landscapes like the legendary teach orchard