As they advanced, the news came to Wang Yun, and he consulted Lu Bu.
“they are a lot of rats,” said Lu Bu. “Never mind how many there are of them. Be not in the least anxious.”
So Lu Bu and Li Su went to oppose them. The latter was in advance and met Niu Fu. They fought； Niu Fu was outmatched and retired after suffering a slaughter. But unexpectedly Niu Fu returned in a night attack, found Li Su quite unprepared and drove Li Su’s force some ten miles, slaying many.
Li Su reported the defeat, and Lu Bu raged at him, saying, “You have sullied my reputation as a warrior and destroyed our fighting spirit！”
And Lu Bu put Li Su to death, exposing his head at the camp gate.
Next day Lu Bu advanced his own force and engaged Niu Fu. He overwhelmed Niu Fu and drove him off. That night Niu Fu called in his most trusted man, Hu Chier, to advise him.
Hu Chier said, “Lu Bu is too doughty a fighter for us to hope to overcome him. Our case is hopeless. Our best course is to desert these four generals, secrete their valuables, and leave the army with just a few of our followers.”
the plan of Hu Chier was adopted, and the two traitors and some others that very night packed up and made their way out of camp. They were only half a dozen. They came to a river and, while crossing, Hu Chier, tempted by the lust of wealth, slew his companion. Then he went to offer the head of Niu Fu to Lu Bu. Lu Bu inquired into the matter, and when a follower told him the truth, he put the double traitor Hu Chier to death.
then Lu Bu advanced against the rebels and fell in with Li Jue’s force. Without giving them time to form in battle, Lu Bu attacked. Horses curvetting and spears set, the army dashed in irresistibly,
and Li Jue, making no stand,
fell back a long way.
Li Jue took up a position under a hill fifteen
miles away and thence sent to call his fellows to council.