After Hainan Island had fallen into the communist hands, the nationalist 3rd Fleet withdrew to Wanshan Archipelago and together with the various nationalist units as the local garrison, the nationalists planned to blockade the mouth of the Pearl River and cutting off the maritime links between the mainland and Hong Kong and Macau. The nationalist naval commander-in-chief Gui Yongqing (桂永清) organized the Wanshan Defense Command, and named nationalist commander-in-chief of the 3rd Fleet Qi Hongzhang (齐鸿章) as the commander, who set up his headquarter on board the frigate Taihe (太和), the largest nationalist warship among more than three dozen nationalist naval vessels in the region, and the flagship of the nationalist 3rd Fleet. In response, the communist force decided to take the archipelago