What's the difference between gouache, watercolor and traditional Chinese painting pigments?

Simply put, gouache is opaque and can be covered. The intuitive performance is that the white pigment can cover the black pigment. Watercolor and Chinese painting are opaque. First darkness, then light. If it doesn't go up, it will be very expensive. As for the difference between watercolor and Chinese painting, it is the same as the second floor in theory. The concrete performance is that watercolor is basically difficult to draw a heavy feeling, which is suitable for paintings such as renderings and landscape paintings, which pay more attention to effects than details; Traditional Chinese painting pigments can draw a three-dimensional and heavy feeling through repeated coloring.