How does the crude salt of geomantic omen turn into water?

The surrounding air is humid. Because the composition of the raw salt is miscellaneous, there are many impurities in it, which are easy to absorb moisture in the air, so the raw salt is easy to get wet and will become water after being wet. Crude salt is the crystallization of seawater or brine after frying in salt wells, salt ponds and salt springs, that is, natural salt, which is unprocessed large-grain salt. The main component is sodium chloride, but it is easy to deliquesce in the air because of impurities such as magnesium chloride, so pay attention to humidity when storing.