This time the Zengs find the Liangshan force that comes to its gate hard to beat. After losing two of his sons and fearing the fortress would fall, Zeng Nong, the patriarch of the Zeng family, sues for peace. Song Jiang sets the conditions that Yu Baosi as well as the Jade Lion and the other horses of Liangshan be handed over. Zeng Nong could meet all the demands except turning over the Jade Lion, which is possessed by Shi Wengong. Yu Baosi is sent over to the Liangshan camp as hostage in exchange for five chieftains from the Liangshan side. Wu Yong coaxes Yu to surrender, warning him that the Zengs are on their last leg. He also instructs him to dupe the Zengs to come out of the fortress to raid the Liangshan camp. Lastly he is to liaise with the Liangshan hostages, who would create havoc inside the fortress in coordination with the exterior attack.