2. The popular saying in the market now is a watercolor background. The bottom here is the part other than the color, which can be understood as the part that sets off the color. Why are emeralds also green, some beautiful and some gray? ? The foundation is different, the background is different, and the overall effect is not good at night.

3. this land can be understood as one-sided species, such as glass land and egg white land, which refers to the type of foundation.

If you don't understand, please continue to ask the jewelry appraiser to answer for you.

My Wangwang Mountain Cui Yuan