Dongguan is a prefecture-level city in central Guangdong Province of South China. An important industrial city in the Pearl River Delta, Dongguan borders the provincial capital of Guangzhou to the north, Huizhou to the northeast, Shenzhen to the south, and the Pearl River to the west. It is part of the Pearl River Delta megacity with more than 44.78 million inhabitants at the 2010 census spread over nine municipalities (including Macao) across an area of 17,573 square kilometres (6,785 sq mi). Dongguan's city administration is considered especially progressive in seeking foreign direct investment.[who?] Dongguan ranks behind only Shenzhen, Shanghai and Suzhou in exports among Chinese cities, with $65.54 billion in shipments. It is also home to one of the world's largest, though largely empty, shopping malls, the New South China Mall. The majority of the population speak Mandarin due to migrants from other parts of the country.