The Beibu Gulf Economic Rim or Beibu Economic Belt (simplified Chinese: 环北部湾经济圈; traditional Chinese: 環北部灣經濟圈; pinyin: Huán Běi bù wān jīng jì quān) 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. 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.
Guangxi region: Nanning, Beihai, Yulin, Qinzhou, Chongzuo, and Fangchenggang
Guangdong province: Zhanjiang (Lianjiang and Leizhou)
Hainan province: Haikou, Danzhou, Dongfang, and Sanya
Municipalities: Hanoi and Haiphong
Northeastern Vietnam and Red River Delta
North Central Vietnam: Hà Tĩnh, Quảng Bình, Thanh Hóa, Nghệ An, and Quảng Trị.
Beibu Gulf Economic Rim Wikipedia
The cooperation scope includes trade, investment, exploitation of marine, tourism and oceanic environmental protection.