Yuanyang County is in the Honghe Hani and Yi Autonomous Prefecture of Yunnan Province in China. Thousands of years ago, the Hani people living in this place created a wonder by developing large areas of terraced fields on the mountainsides and in the valleys.
Nowadays, those terraced fields still support the Hani people both materially and spiritually. The fields are food sources for a population of 350,000, the 640 square kilometres of forests on the mountains hold the water for daily use and irrigation, and a total of 4,653 canals in the county carry water to irrigate the terraced fields. The terraced fields also play a central part in the religious ceremonies of the Hani people.