Hearing the noise of drums and shouting coming from the river,Ts'ao Ts'ao's soldiers reported to Ts'ao Ts'ao.Ts'ao Ts'ao figured that if Chou Yu's forces were attacking in such foggy weather,they were intending to ambush his navy.Then he ordered all his soldiers to stay inside the camp and asked the archers to shoot the attacking ememies on the river.When the scarecrows on one side of the boats had received enough arrows,Chu-ke Liang ordered the soldiers to turn to 20 boats around so the scarecrows on the other side of the boats would receive the arrows.