Beneath billowing clouds, in China's far southwestern Yunnan province, lies a place of mystery and legend. Of mighty rivers and some of the oldest jungles in the world. Here, hidden valleys nurture strange and unique creatures, and colorful tribal cultures. Jungles are rarely found this far north of the tropics. So, why do they thrive here? And how has this rugged landscape come to harbor the greatest natural wealth in all China? In the remote southwest corner of China, a celebration is about to take place. Dai people collect water for the most important festival of their year. The Dai call themselves the people of the water. Yunnan's river valleys have been their home for over 2,000 years. By bringing the river water to the temple, they honor the two things holiest to them -Buddhism and their home.