Located in the north bank of Fuhai Lake and built in Yongzheng’s reign, A Plain Lake under Autumn Moon, which imitates the scenery of the same name in Xihu Lake of Hangzhou, is one of the 40 sceneries of Yuanmingyuan. A Plain Lake under Autumn Moon, composed of a series of scattered waterside architectures, is a wonderful place for enjoying the glorious full moon in autumn nights.