Three months later, in Guanzhong, Chang'an.
The Han Dynasty had the Eastern and Western Han; likewise, there were the Eastern and Western Capitals.
The Eastern Capital was Luoyang, while the Western Capital was Chang'an.
After the late Sui Dynasty received the Mandate of Heaven, seeing that Chang'an was in ruins, it built a new city named Great Xing, designated as the national capital.
In the thirteenth year of the Great Ye era, Duke of Tang, Li Yuan, raised an army in Taiyuan, stormed Guanzhong, and took Chang'an directly.
The Li Sect was one of the four major clans. Though feared by Emperor Yang of Sui and distanced from the imperial court, they made broad alliances with the Guanlong elite and local strongmen, winning the hearts of the Guanlong gentry.
Therefore, after the uprising, there was swift internal and external response. Entering Guanzhong and seizing Chang'an, supporting Yang Yu, residing in Tai Chi, they easily became the dominant force without breaking a sweat.