Historic cases from ancient times to the 1960s Wherever multiracial communities have existed, racial segregation has also been practiced. Only areas with extensive interracial marriage, such as Hawaii and Brazil, seem to be exempt from it, despite some social stratification within them. Imperial China Tang dynasty Several laws which enforced racial segregation of foreigners from Chinese were passed by the Han Chinese during the Tang dynasty. In 779, the Tang dynasty issued an edict which forced Uyghurs to wear their ethnic dress, stopped them from marrying Chinese females, and banned them from pretending to be Chinese. In 836, when Lu Chun was appointed as governor of Canton, he was disgusted to find Chinese living with foreigners and intermarriage between Chinese and foreigners. Lu enforced separation, banning interracial marriages, and made it illegal for foreigners to own property. Lu Chun believed his principles were just and upright. The 836 law specifically banned Chinese from forming relationships with "Dark peoples" or "People of colour", which was used to describe foreigners, such as "Iranians, Sogdians, Arabs, Indians, Malays, Sumatrans", among others. Qing dynasty The Qing dynasty was founded not by Han Chinese, who form the majority of the Chinese population, but by Manchus, who are today an ethnic minority of China. The Manchus were keenly aware of their minority status, however, it was only later in the dynasty that they banned intermarriage. Han defectors played a massive role in the Qing conquest of China. Han Chinese Generals of the Ming Dynasty who defected to the Manchu were often given women from the Imperial Aisin Gioro family in marriage while the ordinary soldiers who defected were given non-royal Manchu women as wives. The Manchu leader Nurhaci married one of his granddaughters to the Ming General Li Yongfang after he surrendered Fushun in Liaoning to the Manchu in 1618. Jurchen (Manchu) women married most of the Han Chinese defectors in Liaodong. Aisin Gioro women were married to the sons of the Han Chinese Generals Sun Sike (Sun Ssu-k'o), Geng Jimao (Keng Chi-mao), Shang Kexi (Shang K'o-hsi), and Wu Sangui (Wu San-kuei). A mass marriage of Han Chinese officers and officials to Manchu women numbering 1,000 couples was arranged by Prince Yoto and Hongtaiji in 1632 to promote harmony between the two ethnic groups. Geng Zhongming, a Han bannerman, was awarded the title of Prince Jingnan, and his son Geng Jingmao managed to have both his