Beibu Bay economic zone, following the Pearl River Delta, Yangtze River Delta, Bohai Bay, the fourth largest after the coastal economic zone, the Southwest China are the only access to the sea.

• 北部湾经济区是继珠三角、长三角、渤海湾之后的第四大沿海经济区，是中国大西南唯一出海通道。