The Longji Rice Terraces (龙脊梯田) were built by the local Zhuang and Yao people, to whom Guangxi is home. Starting in the Yuan Dynasty, work on the terraces took hundreds of years. The terraces are (clever) designed, with hundreds of waterways that connect with each other. During the rainy season, it is along these waterways that rainwater (move) down the mountains and into the terraces. These terraces also provide a perfect environment for birds and fish, some of which feed on insects can harm the rice crops. Today the Longji Rice Terraces attract thousands of visitors who come to admire this great wonder created by people and nature working together.