“With righteousness in the chest and bananas in the snow” is an ancient Chinese calligraphy expression that describes a state of mind in calligraphy works. The "righteousness in the chest" can be understood as the righteousness in the heart of the calligrapher, or the spiritual temperament expressed in the calligraphy works; while "the banana in the snow" is a metaphor to describe the clear and soft strokes in the calligraphy works, like snow The same as the banana in it. Taken together, the whole sentence can be understood to mean that calligraphers must not only have inner righteousness in their creations, but also have soft and beautiful artistic expression.