Upon hearing this news,Chou Yu was very worried,but Lu Su advised him to defeat Ts'ao Ts'ao first and then try to find a way to deal with Chu-ke Liang.Chou Yu then put his plan in motion.He first killed General Ts'ai He,who had pretended to surrender to Wu Kingdom,and he also asked Huang Kai to send a messenger to Ts'ao Ts'ao with an offer of surrender.He ordered his soldiers to prepare fire attack boats and get them ready to sail before midnight.Then he ordered Kan Ning,using Ts'ao Ts'ao's general Ts'ai Chung as a guide,to raid Ts'ao Ts'ao's camp and set fire to his storehouse.