Cheng Yu
Cao Cao put Li Dian and Cheng Yu in charge of supplies while he crossed the river. The supplies were to be ferried by water, but Yuan Shang's officer Gao Fan (高蕃) held a position on the river and blocked the supply line. Cao Cao initially suggested that the goods should be brought by land instead, but since Li Dian argued that Gao Fan's men were lightly armed and not prepared for naval warfare, he allowed Li Dian and Cheng Yu to attack Gao Fan. The attack was successful, and the water route was cleared for the supply train.