Editorial? ?? ????? ?, Spring Clouds at the Pine Studio, Yuan dynasty (1271?1368), dated 1366, China, Hanging scroll; ink and color on paper, Image: 36 1/4 x 12 1/2 in. (92.1 x 31.8 cm), Paintings, Zhang Yu (Chinese, 1333?1385), A poet, calligrapher, and painte...