Song ordered all the allied troops in the west of the city to enter the city immediately, but it was too late. Zheng Zhuanggong had been closely watching the battle, and when he learned that the coalition forces had broken the city, he immediately ordered the Zheng army to attack the enemy at full speed. So the energetic and energetic Zheng army launched an attack on the dazed and exhausted coalition army; As a result, most of the people fled into Dai, but all the baggage and equipment were seized by Zheng's army.

On the other side of Daicheng, Gongzi Tu and Gao Qumi also launched an attack on the coalition forces. The coalition forces had built relatively strong fortifications, and the Zheng army also suffered certain losses in the early stages of the offensive; If the coalition forces were able to hold out for a day, the rested allies in the city would surely join forces with them to defeat the Zheng army.

However, due to the discord between the Cai and the Song people, they were happy to see the defeat of the Song state, so they retreated from their own defenses and fled directly into the city. The flank of the guards was broken, and they could not support it alone, so they also fled with Cai's army.

Outside the city, there were also a large number of siege equipment left by the coalition army, all of which were used by the Zheng army, and the enemy immediately tasted the bitterness of being attacked by the siege engines made by himself.

The coalition forces had smashed the walls and destroyed the gates in the previous day's assault - they had destroyed the city's defenses as much as possible for the Zheng people, as if they were afraid that the enemy would not be able to defeat them. The Zheng army surrounded the newly destroyed Dai State and immediately launched an attack, and today's coalition army tasted the suffering of Dai's army yesterday.

The coalition forces resisted all day. In the early hours of the next day, August 9, the city changed hands again, and the exhausted Zheng army captured the exhausted coalition army—the armies of three countries! Song Yangong, Kong Fujia, and Hua Tu broke through and escaped. In fact, before the attack, Zheng Zhuang Gong had ordered that "Song Yangong must be let live", because Zheng people could no longer find someone more stupid than him to act as the monarch of the Song state.

After Dai was destroyed by the coalition forces, it became a county of Zheng State. The crown prince was quite complaining about Zheng Zhuanggong's practice of not saving him, and he said that if Zheng Jun had joined the war in time, Dai Guo could have avoided the tragic end of the death of the monarch.

Zheng Zhuanggong smiled and didn't say anything, just looked at his other son, Gongzi Tu, next to him. Gongzi Tu said: "The reason why Zheng Guo formed an alliance with Dai Guo back then was only because Dai Guo could not be destroyed at that time. ”

The Zheng treated their captives from different countries in different ways: for the Cai people, they were courteously treated for their escape and were returned to the Cai state unscathed; For Wei Ren, Zheng Zhuang Gong extorted a ransom from Wei Xuangong fiercely, and then let them out as well; For the Song people, Zheng Zhuang Gong announced that as long as they did not commit too many crimes and were willing to break away from the Song State, they could join the Zheng State nationality and obtain freedom and land at the same time; But the die-hards were to be reduced to slavery and not to be freed for life.

The policy towards Song prisoners of war had been in place for a long time. It turned out that Zheng was in a period of rapid expansion, with a large amount of unowned wasteland waiting to be occupied and reclaimed, and the country needed a large number of people to complete the work.

In addition to immigrants from other countries, Song prisoners of war were a good source. But Zheng Zhuanggong believed that instead of turning them into slaves, it would be better to give them the status of countrymen (as the prisoners of war voluntarily).

Zheng Zhuanggong's idea was that since no one was willing to lose their freedom and be reduced to slavery, slaves hated their masters who deprived them of their rights; However, the interests of the Chinese people are the same as those of the country, so when the country really needs it, only the people can be trusted and relied on.

As a result, the moderate prisoner of war policy became the magic weapon that Zheng Guo was in an advantageous position in the war against the Song.

The Zheng army rested in Daicheng for a few days, and the crown prince led an army to escort the captives back to China, while the Duke of Zhuang personally led the main force of the Zheng army to continue the invasion of the Song state—the Duke of Zheng Zhuang would never miss any opportunity to harm the Song state. The Zheng army plundered outside Shangqiu in retaliation for the enemy's sneak attack on Xinzheng.

A month later, Zheng Zhuanggong sent an order to the people of Qi as a secretary of the dynasty to crusade against the next country that disrespected the king's order, the state of Yun. The founding monarch of the state of Yu was Cheng Shuwu, the younger brother of King Wu of Zhou, and the state was originally sealed in the land of Gyeonggi in the Western Zhou Dynasty, and the country moved east to forty miles north-west of the Lu State after the fall of the Western Zhou Dynasty.

The state of Yu is located between the two large countries of Qi and Lu, and lives a cautious life all day long. In the troubled times, no country can be outside the world, and the state of Yu did not want to have a grudge with the Song state, but it angered the people of Zheng Guo. The swift defeat of the Song State made Zheng Jun's revenge against the Yu State soon come.

When the early winter came, the combined forces of Zheng and Qi surrounded the state of Yu, and Jun opened the city gate and personally led the ministers out to meet the invaders. The deferential attitude of the Emperor and the huge bribes he gave were able to preserve the country, and after the three monarchs performed the blood ceremony, the invading army returned to their divisions.

This year, Zheng Guo conducted three large-scale military operations, and all of them were victorious, becoming the most notable country of the year. Zheng Zhuang Gong did not hesitate to reward the meritorious, and ordinary people received a certain amount of goods, and Zheng people happily celebrated the victory, welcomed the arrival of the New Year, and confidently prepared plans to attack Xu Guo.