The Beibu Gulf Economic Rim[1] or Beibu Economic Belt also known as Gulf of Tonkin Economic Belt in (Vietnamese: Vành đai kinh tế vịnh Bắc Bộ) defines the economic region or rim surrounding around China's southwestern coastal region and cities around the Gulf of Tonkin. The region is part of Chinese government's "Go West" strategy, to boost its less developed western regions. The implementation of the campaign, has resulted in many construction projects in cities on the Beibu Gulf Rim, especially in Guangxi.[2] The Beibu Gulf economic rim has emerged as a new highlight of China-ASEAN cooperation, especially between Vietnam, who is also cooperating in this economic zone. It covers Guangdong, Hainan and Guangxi, and northern and central Vietnam.[3] [4]
thumb|200px|Beibu Gulf or Gulf of Tonkin
The cooperation scope includes trade, investment, exploitation of marine, tourism and oceanic environmental protection.