Which is healthier, bone China or purple sand?

Bone China and purple sand materials, purple sand is healthier. Pottery can be made of various mineral clays, including porcelain clay. The firing temperature is relatively low, mostly between 700- 1000℃. The matrix is highly sintered, without porcelain phenomenon, and the knocking sound is dull. If you use the teapot for a long time, the pot body will become smoother and more lovely because of the nourishment of tea soup. Long Wen said in Tea Coconut: Love is no less than palm beads. It's been used for a long time. I look at Ziyu from the outside and Yun Lan from the inside.