In 712 BC, King Huan of Zhou tried to expand his royal power, and he exercised the right that Zhou Tianzi could give and deprive the princes of fiefdoms, and exchanged the twelve euphores of the Su family, which were not under the direct control of the Zhou royal family, for ten euphores of Zheng State, which actually led to the loss of four euphores of Zheng State. Later, King Zhou Huan simply dismissed Zheng Zhuang Gong from his position as Zuo Qingshi, and Zheng Zhuang Gong never went to see King Zhou Huan again.

In 707 BC, King Huan of Zhou led the Zhou army and the troops of the four kingdoms of Chen, Cai, Qiu, and Wei to attack Zheng. Zheng Zhuang Gong led the army to meet the enemy. At that time, the Zhou army was divided into three military formations, and King Huan of Zhou led the left wing army and the army of Chen State, trying to conquer Zheng Zhuanggong. Zheng Zhuanggong faced the formation of King Zhou Huan, set up a Yuli formation, let the chariot rush forward, followed by the foot, and hit the weakest Chen Guo first. This made the troops of Cai and Wei very afraid, and then hastily withdrew from the battlefield. Then, Zheng Zhuanggong concentrated his forces to attack the Zhou army from both sides. The Zhou army was defeated, and King Huan of Zhou was also shot in the shoulder by Zheng Guo's generals with an arrow. King Huan endured the pain and reluctantly commanded the army to escape from the siege. Zheng Guo's generals wanted to continue the chase and capture King Zhou Huan alive, but Zheng Zhuanggong stopped him: A gentleman can't force people too much, let alone bully the Son of Heaven? We are defending ourselves, and it is enough for the country to be saved from peril. After the war, in order to show respect for Zhou Tianzi, Zheng Zhuanggong also specially sent a doctor to the Zhou Dynasty to comfort the injured King Zhou Huan.

After this war, the prestige of King Zhou Huan was discredited, and the prestige of Zheng Zhuanggong was greatly boosted. Old enemies such as Song, Wei, and Chen also came to sue for peace, and Zheng became the most powerful vassal state in the Central Plains at that time. In 701 BC, Zheng Zhuang Gong formed an alliance with the princes of Qi, Wei, Song and other major countries, and Zheng Zhuang became the overlord of the princes, and since then he has started his own small hegemony career.

During the reign of Zheng Zhuanggong, Zheng Guo did maintain unity and stability for a long time. Zheng Zhuanggong's eldest son suddenly became the crown prince, but he was also very fond of other concubines during his reign. As a result, after the death of Duke Zhuang, Zheng Guo immediately fell into a chaotic situation of the struggle for the throne. In the nearly thirty years of civil strife, Zheng Guo had no time to take care of external affairs, and Zheng Zhuanggong's small tyranny career came to an abrupt end.

After the end of the civil strife in Zheng State, the era of great powers competing for hegemony came, first Qi and Chu for hegemony, and then Jin and Chu for hegemony. However, no matter which vassal state competes for hegemony, they all regard the struggle for Zheng as an important part of hegemony. As a result, Zheng Guo became the main object of great power contention. As a small country, Zheng Guo had to go to both ends of the rat in order to survive, towards Qin and Dusk. In the later period of Zheng Jiangong, the war between Jin and Chu stopped, and this truce lasted for a long time, and Zheng also developed peacefully, but it was still often harassed by Jin and Chu.

Zheng has always been the forefront of the struggle for hegemony between the Jin and Chu states, acting as a buffer between the two great powers. The overall strength of the Jin and Chu states was comparable, and both sides knew that they were powerless to destroy the other, and the direct proximity to the border would inevitably lead to more violent conflicts between the two countries. Therefore, no matter how fierce the war between the two sides for Zheng Guo was, Zheng Guo in the Spring and Autumn Period never perished.

Zichan is a very important figure in the history of Zheng Guo, and he has made outstanding contributions to the revival of Zheng Guo. In the more than 20 years of Zheng Jiangong and Zheng Dinggong, Zheng Guo was mainly governed by the child. In terms of internal affairs, he actively united the internal aristocracy of Zheng Guo and maintained the stability of Zheng Guo; improve the land system and taxation system to promote economic development; Written laws have been promulgated to speed up the process of legalization. In terms of diplomacy, Zichan spoke appropriately, was neither humble nor arrogant in the face of a big country, fought the basis of reason, maintained Zheng Guo's independent status, and won a good space for development. During his more than 20 years in power, Zheng Guo appeared to be in the middle of the rise.

Zheng Dinggong was followed by Zheng Xiangong and Zheng Shenggong, and during the Shenggong and Xiangong periods, Zheng Guo was still relatively active on the international stage in the late Spring and Autumn Period. In 504 BC, Zheng destroyed the state of Xu, a vassal state of Chu. In the same year, chaos broke out within the Zhou Dynasty, and Zheng Guo took the opportunity to crusade against the Zhou Dynasty and seized part of the Zhou Dynasty's land. In 502 BC, Zheng formed an alliance with Qi and Wei, and four years later, Lu joined the alliance.

In 453 BC, the three families of Han, Zhao, and Wei were divided, and history entered the Warring States Period, and the history of Zheng was also coming to an end. During this period, Zheng Guo experienced a total of four monarchs, which lasted 79 years. In the early years of the Warring States Period, Zhongxing in the late Spring and Autumn Period accumulated some strength for Zheng Guo, and in the face of repeated attacks from South Korea, Zheng Guo was able to counterattack more. Zheng Guo, which entered the Warring States Period, had very chaotic internal affairs, unstable monarchy, and a turbulent political situation. After the three families were separated, South Korea became Zheng Guo's biggest threat. In 423 BC, as soon as Zheng Yougong ascended the throne, Han Wuzi came to crusade against Zheng Guo and killed Zheng Yougong. It was not until 375 BC that Korea finally destroyed the state of Jeong, and the state of Zheng disappeared from the stage of history.

During the Zheng period, at least before Confucius, ordinary people received only the only thing they received from the state education was to fight war, except for the special training of their fathers and brothers in various professions from an early age. At that time, the so-called "common people are not entitled to courtesy, and doctors have privileges and are not punished", and the state education received by the common people was nothing more than slave training for the ruling class. Zheng Guo is a country that attaches more importance to education, and the status of teachers is naturally relatively high. Zheng Guo's school system is roughly divided into two classes: university and elementary school, with the university located in the national capital and the primary school in the township and home.

The talents cultivated by the school are only the children and grandchildren of princes, princes, princes, and scholars. They go to primary school and then go to university. At that time, the curriculum of education was roughly divided into two types: literature and martial arts: the subjects of literature education were writing, counting, poetry, calligraphy, rituals, music, and other classics; Martial arts education is mainly in archery skills and the skills of driving chariots.

Liezi was a native of Zheng Guoputian during the Warring States Period, an outstanding representative of the Taoist school, a famous thinker and writer. He had a profound influence on philosophy, literature, science and technology, and religion in later generations, and wrote the book "Liezi". Liezi lived in seclusion in Zheng Guo for 40 years, did not seek fame and fortune, and was pure and monastic. The period of Liezi's activity should be in the early Warring States period, later than Confucius and earlier than Zhuangzi.

"Liezi" is also known as "Chongxu Jing", a total of 8 volumes, a total of 134 philosophical essays, fables, mythological stories, historical stories, etc., such as "Yugong Moves Mountains", "Praise Father Chasing the Sun", "Worrying about the Sky" and so on, the pieces are pearls and jades, and they are thought-provoking. "Liezi" is completely comparable to the ancient Greek "Aesop's Fables", and in terms of artistic conception, "Liezi" is far beyond "Aesop's Fables".

After introducing Zheng Guo's general situation, let's learn about "Zheng Feng". "Zheng Feng" is one of the fifteen national styles, and it is a folk song of Zheng Di in the pre-Qin era. During the Spring and Autumn Period, Zheng Guo's ruling area roughly included the areas around Zhengzhou, Xingyang, Dengfeng, Xinmi, and Xinzheng in today's Henan, and "Zheng Feng" was probably produced in this region.

In 806 BC, King Xuan named his younger brother Duke Zheng Huan. When the dog Rong broke through the Zhou Dynasty, Zheng Huan Gong and Zhou Youwang were killed at the same time, and Zheng Huan Gong's son Zheng Wu Gong moved east with King Zhou Ping. Later, Zheng Wugong annexed the territory of the Kingdom of Yu and the State of Yi, followed the name of Zheng State, and named the new capital city as Xinzheng.

Zheng State borders Wangji of the Eastern Zhou Dynasty and is located in the Central Plains, with a relatively developed culture. In the Spring and Autumn Period, the people of Zheng Guo created a new tune with local colors, which was agitated and lively, lyrical and delicate, which was undoubtedly an improvement compared with the slow and dignified Yale. So at that time, many celebrities blurted out that Zheng Le was beautiful and delicate. Confucius reproached Zheng Le, saying that "Zheng Sheng's lewdness" was largely due to the fear that Zheng Le's agitated and lively new voice would replace the Zhou Dynasty's Zhengle.

Most of the poems in "Zheng Feng" are love poems, which are not only related to Zheng Guo's Qinshui and Weishui, which are convenient for men and women to visit and gather, but more importantly, to Zheng Guo's customs and habits. Zheng Guo's Shangsi Festival is actually a festival for young men and women to fall in love. It is precisely because Zheng Guo retains some ancient relics of free interaction between men and women, so it also affects people's thinking. According to the "Zuo Biography", in the fourth year of Zheng Ligong, that is, in 697 BC, Yongji, the daughter of Zheng Guo's minister Sai Zhong, asked her mother: Which is closer to her father, or husband? Her mother replied that there could only be one father, but a husband could be done by any man.

A woman who is a world official actually uses such blasphemous words to educate her daughter, you can imagine what kind of attitude the ordinary people of Zheng Guo will have towards the issue of men and women. Knowing this, it will be easy for us to read the bold love poems in "Zheng Feng" again. Of course, from the point of view of the singing of the people of Zheng Guo itself, I am afraid that there will be no shortage of poems that reflect their labor and resentment, because Zheng Guo is a battleground for soldiers. But the poems about the war are basically not seen in "Zheng Feng", which may be because of the editor!

Among the "National Style", the poetry works of Wei Guo are the most preserved, and there are 39 poems in "Shao Feng", "Hu Feng" and "Wei Feng". However, judging from the classification of the styles of the fifteen countries, "Zheng Feng" is undoubtedly the category with the most poems, with a total of 21 poems. Weiguo is the old land of Yin Shang, and the prosperity of Weiguo poetry is undoubtedly influenced by Yin Shang culture. Zheng Guo is located in the center of Yin Shang culture, and its culture is naturally deeply influenced by Yin Shang. Therefore, the customs and folklore of Zheng Wei and Wei also show many of the same characteristics. During the Spring and Autumn Period and the Warring States Period, the sound of Zheng Wei was a representative of emerging music, and some people said that they did not feel tired when listening to the sound of Zheng Wei, which shows that they do have their own unique places.