2. Yunnan Province is the radiation center of China facing South Asia and Southeast Asia. It is located at the junction of China, Southeast Asia and South Asia, and was selected as the National Pilot Free Trade Zone. It is an important part of the Yangtze River Economic Belt, a popular tourist destination and a major cultural tourism province in China.

3. The Tropic of Cancer runs through the southern part of Yunnan Province, belonging to a low-latitude inland area, with high terrain in the northwest and low terrain in the southeast, and gradually decreases from north to south. It belongs to mountainous plateau topography, and the mountainous area accounts for 88.64% of the total area of the province, spanning six major water systems: Yangtze River, Pearl River, Yuanjiang River, Lancang River, Nujiang River and Daying River. Yunnan's climate basically belongs to subtropical and tropical monsoon climate, while northwest Yunnan belongs to plateau and mountain climate. Yunnan has the highest species of animals and plants in China, and is known as "the kingdom of animals and plants" and "the kingdom of nonferrous metals". With a long history and culture and beautiful natural scenery, it is one of the important birthplaces of human civilization.