Africa and China even before the Han dynasty. He examines some of these representations in arts, such as wall paintings, throughout the other dynasties, including those of Ming and Tang. He identifies Kunlun represented as positive figures in some collections of tales. Forms of employment and status are also a significant source of inquiry, with evidence pointing to the existence of blacks as merchants, businessmen, actors, musicians, porters, soldiers, and animal trainers, as well as enslaved persons. During the Ming dynasty (1368-1644), African soldiers were captured in a battle against the Portuguese occupation of Macao and were among the Chinese army led by Commander Zheng Chenggong. Turning to the contemporary period, he deals with the diasporans working in China, including artists, traders, students, and diplomats, and even working on a television show. A number of communities have developed, especially in cities such as Guangzhou (formerly Canton), an international port since ancient times. He concludes by stating that the African diaspora should be put in the context of economic globalization and transnational migration. 'The diasporic economy has a dual character, high mobility and diversity and a high possibility of residential segregation'. The most recent group in China consists of African students who are not classified as immigrants, although some do become residents. Naturally, the focus on Chinese sports following the Olympic Games of 2008 led to further interest in black representation.