Does golden bean mean tears?

Dropping golden beans means that the child is crying.

Sometimes when we see a child crying, we will ridicule: "Look, it's Jin Doudou again." This is of course a joke, but judging from the function of tears, it is really a veritable "Jin Doudou".

Tears are a kind of weakly acidic transparent colorless liquid, mostly water, containing a small amount of inorganic salts, protein, lysozyme, immunoglobulin A and other substances.

Among them, protein can reduce the surface tension of tears, while inorganic salts can maintain a certain osmotic pressure, so that tears can cover the eyeball evenly and form a thin film on the eyeball surface, which has the functions of wetting the eyeball and improving the optical properties of cornea.