Huang Gai also prepared some "zouge"s (走舸; a smaller type of boat), which would follow behind the "mengchong"s and "doujian"s, and his small fleet sailed towards Cao Cao's base. The wind was blowing strongly from the southeast. When Huang Gai's fleet reached the middle of the river, the ships all raised their sails, and Huang Gai lifted a torch and instructed his men to shout "We surrender!" Cao Cao's troops came out of the camp to look and they said Huang Gai was coming to join them. When Huang Gai was about 20 "li" away from the enemy base, he ordered his men to set the ships on fire and they boarded the smaller boats behind. As the wind was very strong, the flaming ships sailed towards Cao Cao's warships at fast speed and caused them to catch fire as well. Cao Cao's ships were all burnt down and the flames also spread quickly to his camps on land. Zhou Yu then ordered an attack on Cao Cao's base and scored a major victory. Cao Cao retreated north with his surviving troops after his defeat.