A rich source of art in early China was the state of Chu, which developed in the Yangtze River valley. Excavations of Chu tombs have found painted wooden sculptures, jade disks, glass beads, musical instruments, and an assortment of lacquerware. Many of the lacquer objects are finely painted, red on black or black on red. A site in Changsha, Hunan province, has revealed the world's oldest painting on silk discovered to date. It shows a woman accompanied by a phoenix and a dragon, two mythological animals to feature prominently in Chinese art.