Crescent spring Huachi, also called Caichi, is another micro geomorphic form formed by the accumulation of travertine. It is the most wonderful and aesthetic terrain in Baishuitai spring accumulation. The height of quanhuachi is 10-15cm different from each other. From top to bottom, it is like a crescent moon, like a terrace. The reason why Baishuitai has the reputation of the "immortal left field" is precisely because of quanhuachi.