Golden Chi Introduction: Golden Chi is a tool used by the ancients to test the gold grade of ore. When the ancients could not identify the gold content in the ore with the naked eye, they would crush the ore in a stone mortar and put it into the wood quarry. Sand table, then wash it in water, and remove it by spreading it out and removing the coarse particles. The mineral meat will sink to the bottom of the plate. The more sedimentation, the higher the gold grade. It was in this pool that the ancients tested the gold grade of the ore, so we call it the "gold pool".