The starting price of some famous purple sand works in this auction is less than 50 thousand yuan, which is relatively low. Even if you buy directly from these famous purple sand houses, the transaction price of a single pot will exceed 50 thousand yuan. However, even so, there are some works by famous Zisha artists. Because the lot is provided by purple sand collectors, the author of the lot has no ownership and control over the lot. Therefore, this auction result fully embodies "several joys and several sorrows" and has an impact on the social evaluation system of the collection of famous works of Zisha. In this sense, the auction of teapot is a double-edged sword.