Grace of the Prosperous Tang.

Summary

After the failed campaign against Gao Li, the Sui Dynasty's northern territories fell into chaos, with numerous rebel forces emerging. Aristocratic families divided their armies, ignoring the Son of Heaven's orders, leading to defeats like that of General Zhang Xu Tuo. The Son of Heaven retreated to Jiang Du, maintaining control over Chang'an and Luoyang. Li Yuan, Duke of Tang, aimed to unify the north, while Duke Li Mi rose in the east, gaining power through rebellion. Li Mi's leadership transformed the Wagang army into a formidable force, threatening Luoyang's resources. Meanwhile, Li Yuan sought to ally with Li Mi to secure his western ambitions, but the situation remained perilous.

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