Chinatown of Barcelona a part of El Raval, although in Barcelona there was a small Chinese community in the 1930s. History Trading centers populated predominantly by Chinese men and their native spouses have long existed throughout Southeast Asia. Emigration to other parts of the world from China accelerated in the 1860s with the signing of the Treaty of Peking (1860), which opened China's borders to free movement. Early emigrants came primarily from the coastal provinces of Guangdong (Canton, Kwangtung) and Fujian (Fukien, Hokkien) in southeastern China – where the people generally speak Toishanese, Cantonese, Hakka, Teochew (Chiuchow) and Hokkien. In the late 19th century and early 20th century, a significant amount of Chinese emigration to North America originated from four counties called Sze Yup, located west of the Pearl River Delta in Guangdong province, making Toishanese a dominant variety of the Chinese language spoken in Chinatowns in Canada and the United States. As conditions in China have improved in recent decades, many Chinatowns have lost their initial mission, which was to provide a transitional place into a new culture. As net migration has slowed into them, the smaller Chinatowns have slowly decayed, often to the point of becoming purely historical and no longer serving as ethnic enclaves. In Asia Along the coastal areas of Southeast Asia, several Chinese settlements existed as early as the 16th century according to Zheng He and Tomé Pires' travel accounts. Melaka during the Portuguese colonial period, for instance, had a large Chinese population in Campo China. They settled down at port towns under the authority's approval for trading. After the European colonial powers seized and ruled the port towns in the 16th century, Chinese supported European traders and colonists, and created autonomous settlements. Several Asian Chinatowns, although not yet called by that name, have a long history. Those in Nagasaki, Kobe, and Yokohama, Japan, Binondo in Manila, Hoi An and Bao Vinh in central Vietnam all existed in 1600. Glodok, the Chinese quarter of Jakarta, Indonesia, dates to 1740. Chinese presence in India dates back to the 5th century CE, with the first recorded Chinese settler in Calcutta named Young Atchew around 1780. Chinatowns first appeared in the Indian cities of Kolkata, Mumbai, and Chennai. There is also a huge presence of Chinese in Pakistan numbering around 60,000 but they are mostly recent immigrated workers, Architects and professionals who came to Pakistan after China Pakistan