Guangzhou, abbreviated as "Sui", also known as Yangcheng, Huacheng, and Wuyang City, is a prefecture level city under the jurisdiction of Guangdong Province, a provincial capital, a sub provincial city, a national central city, a mega city, and a core city in the Guangzhou metropolitan area. It has been approved by the State Council as an important central city, international commercial and trade center, and comprehensive transportation hub in China, and a world-class city.