There is a black mark on the bottom of China.

There is a black seal on the bottom of the porcelain, which is pastel porcelain in the late Qing Dynasty. The porcelain bottom is mostly one year. Year model is a compulsory course for reading and evaluating China ancient porcelain. The year model records the dynasty and year number of handicrafts, which consists of four or six characters and is generally found at the bottom of imperial vessels. Was there a seal on the bottom of blue and white porcelain in Yongzheng period? The official kiln porcelain in Yongzheng period was not written on the porcelain bottom, but the method of writing money on the porcelain bottom was the most common in Xuande period of Ming Dynasty.