Black pottery remains prosperous in China after centuries Black pottery,the handcrafted earthenware uniquely produced in Yingjing County of Ya’an City,southwest China’s Sichuan Province,has a history of more than 2,000 years.It is made using special clay found only in Yingjing combined with local coal ash which dries a matte silver-gray Black pottery remains prosperous in China after centuries Black pottery, the handcrafted earthenware uniquely produced in Yingjing County of Ya’an City, southwest China’s Sichuan Province, has a history of more than 2,000 years. It is made using special clay found only in Yingjing combined with local coal ash which dries a matte silver-gray