Introduction to the Grain God Xuan Ni: In the fifth year of Shunzhi in the Qing Dynasty (1648), Fusheng Rock was rebuilt. Wu Tailai, a native of the city and a Gongsheng student, inscribed "Gu God Xuan Ni" on the left side of the stone wall in front of Fusheng Rock. These four characters come from Laozi's "Tao Te Ching". The original sentence is that the god of grain is immortal, which is called the mysterious female. The gate of Xuanfei is called the root of heaven and earth.