After Yuwen Yong, the Emperor of the Northern Zhou Dynasty, conquered the Northern Qi in 577 AD and unified the North, the balance of confrontation between the North and the South has obviously tilted to the north. Unfortunately, he died young in 578 at the age of 36.

Yuwen Yun, the Emperor Xuandi of the Northern Zhou Dynasty who succeeded to the throne, was extravagant and flashy, indulged in debauchery and political corruption. One year after he succeeded to the throne, he claimed to be "Emperor Tianyuan" and passed it on to Yu Wenyan, a prince under the age of six, who was known as Emperor Zhou Jingdi in history. He also had five empresses, among whom Yang Lihua, the eldest daughter of Emperor Wen of Sui. Emperor Wen of Sui, the consort, took the opportunity to send out the etiquette of the Northern Zhou Dynasty, and the state affairs gradually became his master.

On June 8th, the second year of Elephant (580), after the death of Emperor Xuandi of the Northern Zhou Dynasty, Emperor Wen of Sui joined Liu Yun and Zheng Yi to assist the government as consorts.

In February of the first year of Dading (58 1 year), Emperor Jing of the Northern Zhou Dynasty abdicated in Emperor Wen of Sui, and Emperor Wen of Sui ascended to the throne, which was named Sui Wendi, with its capital in Daxing City (now Xi 'an), and the Northern Zhou Dynasty fell.

In 589 AD, the Chen Dynasty was destroyed in the south, and China was unified, ending the nearly 300-year-long division since the end of the Western Jin Dynasty. In 605 AD, after Emperor Yangdi ascended the throne, Yuwen Kai was ordered to build Tokyo, and in the same year he moved the capital to Luoyang (now Luoyang, Henan).

During the reign of Emperor Wendi of Sui Dynasty, the society was rich in people's livelihood, the people lived and worked in peace and contentment, and the politics was clear, which created a prosperous situation of ruling the emperor. During the reign of Emperor Yangdi of Sui Dynasty, the Grand Canal was built, but the excessive consumption of national strength led to the rebellion of the people and nobles at the end of Sui Dynasty.

In 6 18 AD, Yu Wenhuaji and others launched a mutiny and killed Emperor Yangdi. Emperor Yang You of Sui Dynasty abdicated Li Yuan and established the Tang Dynasty. In 6 19 AD, Yang Dong, the emperor of Wang Shichong, was also abolished, and the Sui Dynasty was destroyed, which lasted for 38 years.

Extended data

In order to consolidate the development of the Sui Dynasty, Emperor Wendi and Emperor Yangdi built the world-famous Sui and Tang Grand Canal and Chidao, built Daxing City and Luoyang City, and built the Great Wall to protect the return of foreigners. All these enhanced the control of the Sui court in Guanzhong area over the northern region, kanto region and Jiangnan area, and enabled the economy, culture and people of all parts of the Sui dynasty to communicate smoothly, and also gave birth to Jiangdu (now Yangzhou), an important economic town.

Chang 'an, the former Han Dynasty, was devastated by the war, and the palace was small, which could not meet the needs of the newly-built unified national capital. In addition, urban sewage has been deposited for hundreds of years, and it is difficult to drain at the bottom, and drinking water supply is also a problem.

Therefore, Emperor Wendi of Sui Dynasty abandoned the Han Chang 'an City to the north of Longshouyuan and chose a new site to build a new Chang 'an City to the southeast of Han Chang 'an City to the south of Longshouyuan. In January 582, Emperor Wendi of Sui Dynasty appointed Yuwen Kai to be responsible for the design and construction of the new city. Because Emperor Wendi of Sui Dynasty was once named Daxing Gong, it was named Daxing City, which was completed in March of the following year.

Baidu Encyclopedia-Sui Dynasty