12017-02-04T07:11:08-08:00Nancy Um4051576cc4fc4011fb0706d1c68e5004e7744d2dYang Hui, A Branch of the Cold Season, ca. 1440 (Media Gallery)Nancy Um15Image, details, screenshotsgallery2017-02-24T13:14:42-08:00Nancy Um4051576cc4fc4011fb0706d1c68e5004e7744d2d