Introduction to Cai Xitao’s Trail: In the mid-1970s, Professor Cai Xitao, a famous botanist in my country, visited Bubeng Village in Mengla to conduct field scientific research and sampling identification, and finally discovered the Wangtian tree, a species of Dipteroideae in the tropical rainforest. It is precisely because The emergence of the Wangtianshu announced the existence of China's tropical rainforest to the world. So people called the trail that Professor Cai Xitao walked during his scientific research the "Cai Xitao Trail."