During Zheng He's period, the State of Zheng was more active on the international stage at the end of the Spring and Autumn Period. Lu six years, Zheng destroyed, belonging to Chu. In the same year, there was chaos in the Prince Zhou Dynasty, and Zheng took the opportunity to attack six cities next week, namely, abundant, slippery, negative millet, fox savage and quewai. In the eighth year of Lu, Zheng made an alliance with Qi and Wei in an attempt to destroy the State of Jin. Four years later, Lu joined the Zheng-Qi-Wei Alliance. Zheng supported Fan and China Bank in the Sixth Qing Government. "Zuo Zhuan" declined for two years, and contained "Qi people lost Fan Su, Zheng Ziyao gave it to them as a son". Fan and BOC fought in the iron (now northwest of Puyang, Henan), Zheng helped Fan BOC and Wei helped Zhao. Prince Wei "In order to see Zheng Shizhong, the prince was afraid and jumped under the car." It shows that Zheng's army is very strong at this time. In the bloody battle, Zheng Jun lost, only Su Qi was lost, and the army still had some strength. In 453 BC, Han, Zhao and Wei were divided into Jin, and the history entered the Warring States period, which ended Zheng's history. During this period, Zheng was ruled by four monarchs: * * Gong, You Gong, Ji Gong and Kang Gong, which lasted for 79 years. In the early years of the Warring States, ZTE accumulated some strength for Zheng in the late Spring and Autumn Period. In the face of South Korea's eyeing and repeated attacks, it was able to fight back.

During the Warring States period, Zheng's internal affairs were unstable. Funerals were all killed by Zheng people, and the monarchy was unstable and the political situation was turbulent. Shortly after the separation of foreign countries and Kim, South Korea became the biggest threat to Zheng. In 423 BC, just after Zheng Yougong succeeded to the throne, Han Wuzi attacked Zheng and killed Zheng Yougong. South Korea has long been eyeing Zheng. In the fifteenth year of Zheng (408 BC), Han conquered Zheng and captured it, now Qixian County, Henan Province. But Zheng was not to be outdone. He defeated North Korea the following year and defeated North Korean soldiers in Minsu (now southwest of Dengfeng, Henan). In the 23rd year of Jigong (400 BC), Zheng surrounded Yangzhai (now Yuxian, Henan) in South Korea. Judging from this historical event, the initiative in the Zheng-Han War in the early years of the Warring States was not concentrated on one side, and the two sides were evenly matched. Fifteen years later, Han attacked Zheng and captured Yangcheng (now southeast of Dengfeng, Henan). Ten years later, Zheng was destroyed in 375 BC, and Zheng retired from the historical stage.