A visitor looks at a painting by Zhang Daqian (1899-1983) at Sotheby's Hong Kong Gallery in Hong Kong, Oct 11, 2019. Through Nov 9, around 60 of the late Chinese art master's paintings, sourced from his family and private collectors around the world, are on exhibition in celebration of the 120th anniversary of his birthday. Zhang, prized for his detailed portraits and splashed-ink landscapes, is one of the best-known Chinese artists of the 20th century. [Photo/Xinhua]