1942年初,日伪军出动一万余人,对我苏中四分区进行疯狂的“清乡”,扬言要把新四军从(南)通、如(东)、启(东)、海(门)等地区赶走,逼进黄海喝水。陈毅、粟裕同志识破了敌人的阴谋,果断决定在长江口外的黄海上建立新四军的海防武装,开辟海上抗日根据地,扩大回旋余地,以摆脱背水作战的不利地 At the beginning of 1942, the Japanese and puppet troops dispatched more than 10,000 people to carry out a frenzied “Qingxiang” against the fourth sub-district of our country in Su-sze. He threatened to transfer the New Fourth Army from the south to the east (east), Kai (east), sea (door) Driven by other areas, forcing the Yellow Sea to drink water. Chen Yi and Su Yu recognized the conspiracy of the enemy and decisively decided to establish a naval defense force of the New Fourth Army over the Yellow Sea off the mouth of the Yangtze River and open up a maritime anti-Japanese base area so as to expand the room for maneuver to get rid of unfavorable land-back operations