Tang Yin studied under Zhou Chen and Shen Zhou, who were representatives of two major schools of painting in the Ming Dynasty. During his studies under Shen Zhou, Tang Yin made rapid progress and was praised by his teacher. So began to be proud, painting stagnation, the heart is not learning, that do not need to follow Shen Zhou study. In order to educate Tang Yin, Shen Zhou painted a window on the wall. Tang Yin went to open the window and realized that it was painted by his teacher. How could he achieve such a level of painting skill? Tang Yin had an epiphany, and from then on, he devoted himself to learning, and eventually became a generation of famous painters and calligraphers.