Longji (Dragon Backbone) Rice Terraces are located around 80 km (50 miles) away from Guilin, where you will be rewarded feats of farm engineering going all the way up a string of 2400 feet (800 m) mountains. The 66-square-km network irrigation project was began by the ethnic Zhuang in the Yuan Dynasty (1271-1368), and finished by the Qing (1644-1911).