Introduction to Yingjing Casserole Gucheng Village (Guchengping) in Liuhe Township, Yingjing County, Ya 'an City, Sichuan Province is the main producing area of Yingjing Casserole and the location of the provincial cultural relics protection unit "Yandao Ancient City Site". In a sense, this is the birthplace of Yingjing and Yandao, and the casserole produced here is qualified to be called "Yingjing casserole". 198 1 years ago was called "Yingjing Casserole", mainly due to the limitations of the product. At that time, "Yingjing casserole" became synonymous with Yingjing, and foreigners began to know Yingjing from the casserole. After 198 1 year, with the development of product diversification technology, it was collectively called "Yingjing sand" and "Yingjing black sand".