Li Jinglong did not accept Zhu Yunwen's will, saying that he did not dare to use his own efforts to put a 200,000-strong army at risk. If Zhu Yunwen refused, he could only resign and return to Beijing. In this regard, Huang Zicheng said that there is no need to suspect people, and there is no need to doubt people, so Zhu Yunwen had to let Li Jinglong do it. At this juncture, Zhu Di decided to let Zhang Yu go to King Ning, to make him believe that he was in a desperate situation, and he could not distinguish between a soldier and a guard. Master Daoyan came in hastily. Although Li Jinglong was not as good as Zhao Kuo, he actually had 500,000 troops in his hands. The Yan army used one to equal ten, and it was difficult to overcome it. And Zhu Di has decided to seek foreign aid. He will leave 20,000 soldiers and horses in Peiping, hoping that Master Daoyan will help Zhu Gaochi and Miaoyun to defend Peiping.
Zhu Di was about to leave Peiping and hugged Miao Yun before leaving. It was a blessing for Zhu Di to marry her in this life. After turning around and admonishing Zhu Gaochi, he withdrew the guards at Lugou Bridge and went to seek foreign aid. Li Jinglong also quickly learned that he immediately ordered the entire army to withdraw from the camp and enter Peiping. Zhu Gaochi and his son Zhu Zhanji defended the city together. Although this move was dangerous, it allowed many defenders to defend Beiping City with determination. Miaoyun worried that Li Jinglong knew that the main force of the Yan army was not in Peiping, and he would definitely do his best to attack Peiping. At this time, although Li Jinglong was not sure whether Zhu Di was in Peiping City, he knew that Zhu Di would never stand alone in the city and let others attack him. Li Jinglong still remembered the strategy he told Xu Da back then.
After the Ming army attacked the city for three days, the spies came back and reported that they had not seen Zhu Di, as well as Zhang Yu, Zhu Neng and others. Li Jinglong immediately analyzed that Zhu Di most likely went to Daning. He ordered Chen Hui to send scouts from the cavalry battalion, with fireworks as a sign, and set off fireworks according to the number of cavalry in the Yan army. But Zhu Yunwen obeyed Qi Tai's suggestion and still did not agree to let Xu Yungong take over the military power of Daning. Zhu Yunwen promoted Chen Heng's position, but he did not expect that Chen Heng had already taken refuge with Zhu Di, and he also spread false news to Li Jinglong that Zhu Di did not come to Songting Pass. Li Jinglong had to order that the army would take Peiping within ten days.
Zhu Di's own army came to Daning. Inside Daning, the soldiers who originally belonged to King Yan were talking a lot, but their hearts were already inclined to Zhu Di's side. At this moment, Zhu Di walked in, and the letters of Duoyan Sanwei came one after another. He sat on the Duoyan Sanwei and his former subordinates, and rushed into Ning Wangfu, and Ning Wang Zhuquan surrendered. The fierce attack of the Ming army broke into the Zhangyi Gate. Miaoyun put on his armor and led the family members of the generals and the servants in the palace to the city to defend against the enemy troops who entered the city gate. Zhu Gaojiu was very frustrated. His mother-in-law even brought his inner servants to defend the city. He felt that Beiping City could not be defended, and suggested that Zhu Gaochi take them with them and escape from Beiping in the dark.
Although Zhu Gaochi was weak, he did not lose a single point in his ambition. Even if the final result was death in battle, he would never abandon the city and flee. After the wind picked up at night, Miaoyun immediately ordered to prepare water for the city. The next day, Li Jinglong saw the city of Beiping not far away, as if it had become an ice city. The scout sent fireworks to warn Li Jinglong like falling into an ice cellar. It seems that Zhu Di, the King of Yan, is going to bring reinforcements back to Peiping for support. After clearing the surrounding scouts, Zhu Di ordered the entire army to stick to the camp, and those who dared to fight would be executed. Li Jinglong didn't pay much attention to Zhu Di's military tactics.