1. Xu Zisha Pot has exquisite craftsmanship and high quality, which is well received by the market. In the field of teapot making, Xu is widely recognized and has a high reputation, so there will be more orders and demands.
2. As a well-known manufacturer of teapot, Xu's name itself has a certain brand effect, attracting many collectors to buy it. This also makes her pot in greater demand.
3. With the hot market of teapot, more and more people began to pay attention to and buy teapot, which promoted the number of many works.
These are only possible factors. For specific reasons, you can ask the pot maker or directly ask Xu himself.