Slipform Paving of Cement Concrete Pavement in Mountain Area
从南开始，第一个叫寰丘后，第二个叫皇穹宇，北面的一个叫祈年殿。
From south , the first one is called the Circular Mound Alter , the second is called the Imperial Vault of Heaven , the last one is called the Hall of Prayer for Good Harvest .
丘二