2. The premise of asking questions is the "black, white and gray" wall and basic color, which depends on whether the wall behind the living room sofa is more "white" or "gray". For example, there are many "white directions", the basic tone is bone white, ink painting or colorful Chinese painting can be used, and Chinese painting with calligraphy and painting is also very good; However, if there are many "gray directions" and the tone is "gray", calligraphy and painting and ink painting are not suitable. It is recommended to choose Chinese painting and oil painting with strong colors as far as possible.