encampment. This attack caught the Jurchens by surprise and they began to scramble and swing their swords on anyone they saw. By daybreak, many of them had trampled over one another; amongst those fatalities was the commander of the invading Jurchen force. The Jurchens had no choice but to retreat. Thus was the city of Zhaozhou relieved. Despite this victory, most other Song defending forces, again, were defeated, and the Jurchens even captured two Song emperors. In AD 1127, Han was given a thousand-man army to escort the crown prince Zhao Gou, Primce of Kang (趙構, 亦称康王) to safety in southern China. He was checked by an army ten times larger but, once again, emerged victorious and forced the enemy to retreat. The crown prince who would become Emperor Gaozong () successfully reached Henan (), ascended the throne and established the Southern Song Dynasty. Shortly after in 1127 or 1128, the capital was moved to Yangzhou. Han advised Emperor Gaozong to recover the lost lands in the North, but Gaozong, content with simply being emperor, neglected his advice. Meanwhile, under siege, the Chinese general guarding the northern capital, Kaifeng (), was so angered that he felt ill knowing no reinforcements would be sent, and died shortly after. The city was surrendered shortly after, in 1128. The Third Invasion of the Jurchens The Fall of Kaifeng boosted the morale of the Jurchens, and they attempted a third invasion. Gaozong saw little intention to make a good defense against the Jurchens. He felt the strong generals around him would make him vulnerable and wanted them to lose to remove the threat. Han facing enormous odds, was beaten off for the first time. Many of the Song generals, disgusted by the cowardly emperor, began to retaliate, and Han had to gather up what was left of his force and protect the throne. He successfully captured the renegade generals and scattered their forces. It is stated that Han actually condemned the emperor and that the emperor apologized and finally showed signs of better supporting the generals defending China. Despite early successes of the Jurchens, the Jurchens was beaten off by another general, Yue Fei, in a series of battles. The Jurchens under a crowned prince Jin Wuzhu (), with a large force of hundred thousand force, decided to avoid Yue and took a route to cross and invade the capital and abduct another emperor.