Introduction to the Huansha Stone: Going down the stairs from the Huansha Pavilion, there is a huge ancient gray-brown square stone standing on the riverside. It is said that Xi Shi was here to wash the yarn. The Huansha Stone has gone through 2500 years of vicissitudes. The scenery of the past is long gone, but the word "Huansha" written by Wang Xizhi is still in my mind.