<i>Traveling on the River in Clearing Snow</i>, by Guo Zhongshu (c. 910–977 AD). This painting shows a pair of Chinese cargo ships (with stern-mounted rudders) accompanied by a smaller craft. It is painted on silk and dated to the early Song Dynasty period (960–1279 AD).
Guo Zhongshu (c. 910–977 AD)
A scanned image from Patricia Ebrey's <i>Cambridge Illustrated History of China</i> (1999); additional information from Ann Paludan's <i>Chronicle of the Chinese Emperors: the Reign-by-Reign Record of the Rulers of Imperial China</i> (1998)