Read "Map of Yunnan Province" and materials and answer the following questions: Materials 1: Three parallel rivers refer to Nujiang River, Jinsha River (upper reaches of the Yangtze River) and

(1) The Mekong River, the ethnic river with the largest number of Asian countries, is called the Lancang River in Yunnan Province, China.

(2) As can be seen from the figure, Vietnam, Laos and Myanmar in Southeast Asia are bordered by Yunnan Province in China.

(3) Xishuangbanna, located in the south of Yunnan Province, is a famous nature reserve in China with rich tourism resources; The area belongs to tropical monsoon climate, and the traditional houses are Dai bamboo houses, which reflects the local hot and humid climate characteristics.

(4) As can be seen from the figure, "Three Parallel Rivers" refers to Jinsha River, Lancang River and Nujiang River, which are located in Hengduan Mountain area in western Yunnan, China.

(5) Beautiful tropical scenery, peculiar karst terrain, rich ethnic customs, charming cultural relics, etc. It provides good resource conditions for the development of Yunnan tourism, so tourism has become a pillar industry in Yunnan Province.

So the answer is: (1) Lancang River; (2) Myanmar; (3) Xishuangbanna; Damp heat; (4) transection; (5) Beautiful tropical scenery, peculiar karst terrain, rich ethnic customs, charming cultural relics, etc.