2. Generally, after physical weathering, primary deposits are mainly produced on hillsides and buried in sand or gravel layers; Shi Shui mainly refers to the jadeite raw materials deposited in the river bed; Half mountain and half water shell is between rock and water stone; Water-to-sandstone has a thick weathering crust, which is often spherical or oval; Primary skinless stone refers to jadeite raw stone with bare and unweathered skin, which occurs in primary mineral deposits.