sentences:  By the time Liu Hongcao and the Southern Han expedition arrived in Vietnamese waters, Liu Hongcao's plan was to ascend the Bạch Đằng River and to place his army in the heart of Giacannoto Chau before disembarking.The Bạch Đằng was the major riverine route into the Red River plain from the north.Ngô Quyền anticipated this plan and brought his army to the mouth of the river.