1, stone, generally refers to the small rock mass that falls off from the large rock mass due to external force, and mostly adheres to the surface of the large rock mass, generally in the form of block or ellipse, with rough or smooth appearance, solid texture and brittle hardness. It can be used to make stone tools and collect stone mines. Thousands of years ago, our ancestors made fires with stones. Stone is generally composed of calcium carbonate and silicon dioxide.

2. Stones can be used for ignition, beauty, making food and jade. Stone can be used as grinding stone. Drinking medical stone water can regulate human metabolism, increase appetite, promote circulation, help eliminate harmful substances accumulated in human body due to environmental pollution, and purify cells. Long-term drinking can prolong life. Stone can be used to build houses, handicrafts and building materials.