When was the bottom of Yixing Zisha Pot and Gentiana Tiaoliang Pot?

Ming and Qing dynasties or earlier. Yixing Zisha pottery bottom gentian hanging beam pot is a traditional handicraft. Because Yixing purple sand pottery has a long history and the production technology has been passed down for many years, it is difficult to determine the production time of the hanging beam pot with gentian at the bottom. The production history of Yixing purple pottery can be traced back to the Tang Dynasty. Gentian iron beam pot is a common type of Yixing purple pottery, which can generally be seen in the Ming and Qing Dynasties. The time of making the hanging beam pot of Gentiana scabra may be earlier, which should be in the Ming and Qing Dynasties or earlier. The specific time is determined according to the characters, patterns, money knowledge and other factors on the bottom paragraph, which needs further research and identification.