cast moon blocks
The cup is divided into two sides, the convex part is called the "yin side" (that is, the reverse side), and the flat part is called the "yang side" (that is, the front side).
The cup is divided into two sides, the convex part is called the "yin side" (that is, the reverse side), and the flat part is called the "yang side" (that is, the front side).
