At the end of the Sui Dynasty, there was chaos in the world, and many officials in the Sui Dynasty rebelled one after another, and they led the army to dominate one side. Among them, Taiyuan Li Yuan and his son finally contributed to the establishment of the Tang Dynasty. Li Yuan was originally a noble in the Sui Dynasty. He inherited the title from his ancestors and became the Duke of Tang. In 6 17 AD, Yang Guang sent him to Taiyuan as a left-behind (official name) to suppress the peasant uprising. At first, he also won several battles. Later, when he saw that the insurgents were getting stronger and stronger, he also felt nervous.

Tang Gaozu's second son, Li Shimin, is the most talented and courageous of his sons. Seeing that the general trend of the Sui Dynasty was gone, he secretly made friends with talented people to discuss and unify the world together. After the chaos, Li Shimin took the opportunity to persuade his father to arise.

According to the counsel of Shimin and Jinyang Liu Wenjing, Tang Gaozu set out from Taiyuan and became a general, concentrating more than 200,000 troops to attack Chang 'an. After Li Yuan captured Chang 'an, in order to win the hearts of the people, he announced Article 12 of the Covenant, abolished all harsh decrees of the Sui Dynasty, and temporarily made Yang Guang's grandson You Yang an emperor in name only.

General Yu Wenhuaji staged a coup in Jiangdu and strangled Emperor Yang Di. Since then, Tang Yuan was abolished immediately, proclaimed himself emperor, and changed his country name to Tang. After several years of fighting, Tang Gaozu and Li Shimin suppressed other rebels and separatist forces and unified the whole country.

Get up, Li Yuan.