Earliest attested trading contacts existed between Southeast Asia and the Chinese Shang dynasty (around 1600 BCE to around 1046 BCE), when cowry shells served as currency. Various natural products, such as ivory, rhinoceros horn, tortoise shells, pearls and birds’ feathers found their way to Luoyang the capital of the Zhou dynasty, that lasted from 1050 to 771 BCE. Although knowledge about port localities and shipping lanes is very limited, it is assumed that most of this exchange took place on land routes and only a small percentage was shipped "on coastal vessels crewed by Malay and Yue traders".