C322 Underground of guanyin

The Lingnan was a mountain with many treasures. If one did not step foot in it, it would be very difficult to understand its mysteries.

The Guanyin dirt was a special product of the mountain. Normally, people would store this in their homes, but it wasn't used for food. It was used to make pottery.

The mountaineers were used to being self-sufficient. If they could produce their own materials