Sand and gravel are forbidden to fall

English: This is a mod that prohibits the fall of gravel, which will affect construction when you are building, and this mod will prevent sand and gravel from falling. 中文：这是一款禁止沙砾掉落的模组，当你在建设时沙砾和沙子会掉落影响建设，这款模组可以让沙子和沙砾不会掉落