What dynasty was before the Tang Dynasty?

Before the Tang Dynasty was the Sui Dynasty.

The battle of Sui and Chen was a unified war at the end of the Northern and Southern Dynasties. After the victory of the war, the Sui Dynasty was replaced and entered the historical stage. After the death of Emperor Xuan Di of the Northern Zhou Dynasty in 580, Emperor Wendi of Sui Dynasty abolished Jingdi of the Northern Zhou Dynasty and established the Sui Dynasty, namely Emperor Wendi of Sui Dynasty.

In 620 A.D., the grandson Dao of the Emperor was picked up by Khan in East Turkistan and was arranged to come to East Turkistan. The grandson of the Emperor was proclaimed as the new Sui King. At that time, the Central Plains people who stayed in East Turkistan were handed over to the Tao and established a new dynasty. At that time, people called it "Da Sui" and in history we called it "Hou Sui".

In 630, the Tang Dynasty sent troops to destroy the Eastern Turkistan, and divided forces to break Dingxiang, and Sui Dynasty was destroyed. The Sui Dynasty completely collapsed and ushered in a new era-the Tang Dynasty.

We can remember the order of Chinese dynasties through ballads:

Since the beginning of the Three Emperors and Five Emperors, Yao Shunyu has been passed down from generation to generation;

Xia and Shang Dynasties, Western Zhou Dynasty and Eastern Zhou Dynasty are divided into two parts.

Spring and Autumn and Warring States unified Qin and Han Dynasties;

Three-point Wei Shuwu, before and after the Second Jin Dynasty;

The Northern and Southern Dynasties coexisted, and the Sui, Tang and Five Dynasties passed;

After four dynasties of Song, Yuan, Ming and Qing, the imperial dynasty ended here.

Extended data:

Datang founding

The royal family of the Tang Dynasty came from the Li family in Longxi. It is said that Li Yan, the founding monarch of the Sixteen Countries in Xiliang, was his distant ancestor. At that time, the Li family was also an important member of the Guanlong military aristocratic group in the Northern Wei Dynasty. Li in Longxi was a famous family of military commanders in the Qin Dynasty, and famous generals such as Li Guang, the flying general of the Western Han Dynasty, and Li Xin, the famous Qin State, emerged.

In Old Tang Book and New Tang Book, it is said that Li, the royal family of the Tang Dynasty, is a descendant of Li Er (Lao Zi). During the Northern Zhou Dynasty, following the standard policy of Guanlong Group, Li was given the title of "Xiao Ye" by Hu. At the end of the Northern Zhou Dynasty, Emperor Wendi of Sui Dynasty reinstated him as Li. During the great cause of the Sui Dynasty, due to Yang Di's abuse of state power and the failure of Koguryo's Three Signs, the people revolted at the end of the Sui Dynasty. Seeing the chaos in the world, the demise of the Sui Dynasty was irreversible, and Li Yuan came up with the idea of replacing it.

References:

Baidu Encyclopedia-Tang Dynasty