Twin Trees by the South Bank (Annan shuangshu)

Ni Zan (simplified Chinese: 倪瓒; traditional Chinese: 倪瓚; Wade–Giles: Ni2 Tsan4; 1301–1374) was a Chinese painter during the Yuan and early Ming periods. Along with Huang Gongwang, Wu Zhen, and Wang Meng, he is considered to be one of the Four Masters of the Yuan dynasty.