Qi was a vassal state in the history of China from the Western Zhou Dynasty to the Spring and Autumn Period and the Warring States Period. And Jiang Qi and Tian Qi. In the Western Zhou Dynasty, Zhou Wuwang named Qi as a Lu merchant. Because Jiang Guojun's surname is Lu, it is also called historical name and abbreviation. In 39 1 year, Sun Tian and Qi Kanggong of Tian Chengzi IV were abolished. In 386, Qi Kanggong was banished to the sea and became a monarch on his own. In the same year, he was named the Duke of Qi and the King of Zhou An. The monarch Gui's surname is Tian, which is the country of Tian Ji and is known as Tian Ji in history. Qi became one of the Seven Heroes of the Warring States until it was annexed by Qin in 22 1 year. From then on, Qin unified the world and established the Qin Dynasty. After the restoration in 298, it was destroyed by the Western Han Dynasty in 202.

In the fourth year of Emperor Gaozu (203 BC), he sent Sean to the State of Qi, made Han Xin king of Qi, and made seventy cities a fief. The capital is Linzi. Qi State in the Western Han Dynasty (20 BC1-BC 125).

The Eastern Han Dynasty (25 -220) was a unified dynasty in ancient China, which was called the Han Dynasty together with the Western Han Dynasty. At that time, the Eastern Han Dynasty was the most powerful country in the world, and its early prosperity was also one of the prosperous times in China's history. The Eastern Han Dynasty, also known as the later Han Dynasty, is different from the Han Dynasty before the Western Han Dynasty. Taking the meaning of the revival of the Han Dynasty, Luoyang, the capital of the Eastern Han Dynasty, was called Tokyo, so the Eastern Han Dynasty was also called Tokyo. During the Eastern Han Dynasty, there were many important events that affected the world history, such as the Xiongnu's westward migration and leaving Europe under the repeated blows of the Eastern Han army; Ban Chao sent envoys to the Western Regions, which opened the Silk Road to Europe for the first time. Cai Lun invented papermaking; Zhang Heng invented the seismograph and the armillary sphere; Buddhism was introduced into China; The establishment of Taoism, etc., are major events that have had a far-reaching impact on China and even the world.

From which Qi State, the Eastern Han Dynasty was later than Qi State.