What is Hua Yuyao?

Coloured glaze. According to Huarong Road, Yan Yue's medicinal jade is colored glass, which is called medicinal jade because the colored glass in Ming Dynasty is very opaque. A small piece of jade can have a certain effect after being soaked in a medicinal bath. Huarong Road is directed by Hu Yijuan, starring Ju and Fiction, and starring Liu,,,, Song, Nie Zihao and Jison.