Actors perform on Maritime Day of China at the Olympic Center in Nanjing, capital of east China's Jiangsu Province, on July 11, 2012. An annual festival commemorates Chinese explorer Zheng He on this day. During the Ming Dynasty (1368-1644), Zheng He made seven voyages from 1405 to 1433 to more than 30 countries and regions in Asia and Africa, traveling more than 100,000 km (XINHUA) |