Soy sauce is a general term, which is divided into many kinds, including soy sauce, soy sauce, extra fresh soy sauce, straw mushroom soy sauce and so on. (Now it's more finely divided, and there are more varieties.) Soy sauce is dark in color and strong in taste, and is generally used for braised dishes, mainly for coloring. The light soy sauce is lighter in color and fresher in taste than the light soy sauce, which is mainly used for cold salad and light-colored dishes. The quality of the old king is better than that of the ordinary old king.