Melodies of Nature Series Ep. 2: Xishuangbanna, a mysterious landNature

This is an oasis on the Tropic of Cancer called Xishuangbanna. Before the 1960s, the world used to believe that rainforests were limited to the tropics. Later, field surveys in Xishuangbanna revealed species of the Dipterocarpaceae family and other indicator plants of the tropical rainforest. That's how we knew that there're rainforests north of the equator. Let's go and explore the mysterious land!