No. According to the relevant information, we can know that in that particular era, there was no certificate for real pots in Gu Jingzhou. Gu Jingzhou, known as the ancient, is the most outstanding purple sand ceramist in modern China. There are seven famous artists in modern Yixing (Ren Ganting, Wu Yungen, Pei Shimin, Wang Yinchun, Zhu Kexin, Gu Jingzhou and Jiang Rong). He devoted himself to the establishment of Zisha Craft Factory before his death, and his works fully showed the beauty of essence, spirit, spirit and rhyme, which not only had the unique artistic characteristics of the East, but also endowed him with the flavor of the times, so he was called a master of Zisha Pot.