What are the purple clay pots with the bottom of Wu?
Wu Desheng teapot. According to the query of Sohu Culture Network, Wu Desheng Pottery Firm was founded by Wu Hanwen in 1874, and its trade name was marked with "Qi Tao", "Qi Tao", "Qian Tao", "Songlu Master" and "Yan Ru". After 1921, it was marked with "Jinding Trademark", "Wu Desheng System" and "Wu Zi Bottom Payment".