The reason why Emperor Yi is called King Chu Huai.

That's because one of the ancestors of Emperor Yi was King Chu Huai of Chu, one of the Seven Heroes of the Warring States Period.

The so-called Seven Heroes of the Warring States Period refers to the collective name of the seven strongest vassal states of the Warring States Period of the Eastern Zhou Dynasty (the combined name of the Spring and Autumn Period and the Warring States Period) in history. During the Spring and Autumn Period (770-476 BC), numerous wars greatly reduced the number of vassal states, and by the Warring States Period (475-221 BC), the seven most powerful vassal states were Qi, Chu, Qin, Yan, Zhao, Wei, and Han, which historians called the "Seven Heroes of the Warring States." Of the seven vassal states, except for Qin, which was west of the Kushan Mountains, the remaining six were all to the east. Therefore, these six countries are also called "Shandong Six Kingdoms"

Qi, the capital of Linzi, the capital is now located in the northeast of Zibo, Shandong, and the land is part of the present-day province of Shandong and Hebei.

Clear. The capital city of Yan Ying was later moved to Shouchun, and the current location of the capital was Anhui Shou County in Jingzhou, Hubei, Hubei, Hubei, Anhui, Henan, and later developed to Jiangsu, Chongqing, Guangxi and other places.

Qin. The capital city of Liyang was later moved to Xianyang, where the capital is now located in Xianyang, Shaanxi, and the land was developed in the present-day provinces of Shaanxi and Gansu, and later developed to Sichuan and Chongqing.

Yan. The capital city was later moved to Liaodong, and the capital is now located in Beijing, Tianjin, Hebei, Inner Mongolia, and Liaoning.

Zhao. The capital city of Handan, where the capital is located today, is part of the territory of Shanxi, Inner Mongolia and Hebei.

Wei. The capital city of Anyi was later moved to Daliang, and the current location of the capital is now Kaifeng, Henan, and the land is in the area of Shaanxi and Henan in today's province. At its peak, it spanned six provinces: Shaanxi, Henan, Hebei, Shanxi, Shandong and Anhui.

Han. The capital city of Xinzheng, where the capital is located today, is now Xinzheng, Henan, and the land is part of the present-day province of Henan and Shanxi......

At the end of the Spring and Autumn Period, the countries were annexed, and the remaining major powers mainly included Qin in the west, Jin in the north of the Central Plains, Qi and Yan in the east, and Chu, Wu, and Yue in the south. In the early Warring States period, the above-mentioned powers, except Wu, were destroyed by Yue in 473 BC. All preserved. The Qin and Yan states were weaker. The more powerful ones were the four kingdoms of Jin, Qi, Chu, and Yue. Among them, the Jin State was annexed between the six Qings, and in 453 BC, the situation of "three families divided into Jin" was formed in Zhao, Wei and Han, known as the "Three Jin". The Three Jin Dynasty were the most powerful in the early Warring States period. Attacks on other countries are often combined forces. 403 BC. King Weilie of Zhou officially ordered Sanjin to be the princes. Since 481 BC, Tian Chengzi, Tian Heng (also known as Chen Heng), killed the Duke of Qi Jian. He is good at Qi politics and forms a situation of "Tian Dai Qi". However, in the early Warring States period, Qi's strength was temporarily weaker than that of the Three Jins. Although the state of Chu expanded slightly to the east. However, he went north to compete with the Sanjin for Zheng, but suffered defeat. After the destruction of Wu, the Yue Kingdom was strong for a while, but after entering the Warring States period, it declined due to long-term civil strife. In 333 BC, it was defeated by Chu.

In the middle of the Warring States period, the pattern of the seven kingdoms of Qin, Qi, Chu, Zhao, Wei, Han and Yan gradually took shape. Initially, Wei was the strongest among the major powers, but it gradually declined under the attack of Qi and Qin, who came later. The state of Chu appointed Wu Qi to change the law, and the country was quite vigorous, and he became the leader of the south of the Yangtze River. In 367 BC, taking advantage of the civil strife in the Zhou Dynasty, Zhao and Han divided the Zhou into two small states, the Western Zhou (with Wangcheng as the capital) and the Eastern Zhou (with Gong as the capital), and gradually occupied the outer areas of the Zhou. Among the countries, only the swallow is still weak. As a result of the success of the domestic reforms, Qin and Qi became the two great powers of the West and the East. Although King Wei Hui was proclaimed king in 344 BC, he was twice defeated by Qi in the Battle of Guiling (353 BC) and the Battle of Maling (341 BC), and was forced to "meet the King of Xuzhou" with King Qi Wei in 334 BC. In 325 BC, King Huiwen of Qin also proclaimed himself king. Subsequently, Han, Zhao, Yan, Zhongshan and Song also became kings. The major powers have co-opted with other countries, and there has been an upsurge of vertical and horizontal cooperation. The essence of the alliance is the struggle between Qin and Qi and Chu, the two major east-west confrontation groups. During this period, Qin basically had the upper hand, subduing Han and Wei successively, inflicting heavy losses on the state of Chu, and defeating Bashu. Qi Yin did not directly confront Qin and still maintained his position as the hegemon of the East. Zhao Yi is also stronger, and King Wuling of Zhao once implemented "Hufu cavalry shooting" in an attempt to destroy Zhongshan and attack Hudi.

In the late Warring States period, the annexation between countries became more intense. Chu violated the longitudinal covenant and formed an alliance with Qin, but was crushed by the two sides of Qi, Han, Zhao, and the state of Qin, which betrayed the alliance. Zhao extinguished Zhongshan. The country is strong. Although Qi coerced Han and Wei to contend with Qin, it was difficult to prevent Qin's encroachment attack on Han and Wei. In 288 B.C., Qi and Qin were called the Eastern and Western Emperors, and Xuan both gave up the title of emperor. In the following year, Su Qin, Li Dui, Zhao, Qi, Chu, Wei, and Han attacked Qin and stopped at Chenggao (now Xingyang, Henan), and Qin returned some of the lost land of Zhao and Wei to sue for peace. The following year, Qi destroyed the Song Dynasty. Qin Sui masterminded the joint attack on Qi. In 284 B.C., King Yan Zhao made Le Yi a general, and the five kingdoms of Yan, Qin, Han, Zhao, and Wei attacked Qi, invaded Linzi, the capital of Qi, and occupied Qi for five years. In 279 BC, the Qi general Tiandan organized a counterattack and recovered the lost territory. Although Qi returned to the country, his vitality was greatly damaged, and he was unable to compete with Qin from then on. After that, Qin's opponent was mainly Zhao State. On the basis of further weakening Chu, Qin actively developed eastward and formed a head-on confrontation with Zhao. From 262 to 260 BC, Qin and Zhao fought fiercely in Changping (present-day Gaoping, Shanxi), and Qin defeated Zhao (Battle of Changping). In 259 BC, Qin Jin besieged Handan, the capital of Zhao, for three years. In 257 BC, Wei Xinlingjun and Chu Chunshenjun rescued Zhao from defeating Qin and lifted the siege of Handan. Although Zhao turned the corner, he suffered heavy losses.

In 251 BC, Yan took advantage of the new defeat of Zhao and sent troops to attack Zhao, but was defeated by Zhao. However, under the threat of Qin, the six eastern states formed a temporary alliance. In 247 BC, Wei Xinling and the troops of the five kingdoms attacked Qin and defeated Qin outside the river. In 241 BC, Zhao Panuan and the troops of Zhao, Chu, Wei, Yan, and Han attacked Qin, but were defeated by Qin. Since then, the alliance of the six countries of the East has ceased to exist. From 230 BC to 221 BC, Qin successively destroyed Han, Zhao, Yan, Wei, Chu, and Qi, unified the world, and the situation of the Seven Kingdoms competing for supremacy ended. (To be continued......)