another army, alongside the navy. to siege the Goguryeo capital. The navy arrived first and with a haste order, the navy attacked the capital but were defeated by ambush. The navy then waited for the land army to arrive. The supply of food had also been greatly delayed and many Sui soldiers died of famine. Then the Goguryeo General Eulji Meundeok rallied Goguryeo forces, and constantly harassed them with ambushes and feigned retreats. The Sui army had come to the Salsu River, but Eulji and the Goguryeo forces were waiting in ambush. A dam was made at the Salsu River to make the river seem it was shallow. When the Sui army was in the middle of the River, the dam was opened and many Sui soldiers drowned. Out of the 305,000 men that entered the river, only 2,700 soldiers escaped death. Thus the Sui army, or what was left of it, retreated back to Sui. This war had, however, resulted in devastating losses for the Sui in terms of soldiers, money and support from the people. In winter 612, Emperor Yang gave a daughter of a clansman, whom he created the Princess Huarong, to Qu Boya () (the king of Gaochang) in marriage In spring 613, Emperor Yang again ordered that soldiers be gathered at Zhuo Commandery, as he prepared a second campaign against Goguryeo. He also selected the most elite of the soldiers into a specialized corps, the Xiaoguo Army (驍果, meaning, "the strong and brave"). Thereafter, the Xiaoguo Army became his own personal guards. In response to the conscription order, even more men deserted and joined the agrarian rebels, throwing the northern central part of the empire into a state of confusion. With the officials on command having little military training, the rebels went largely unchecked. One notable exception was general Zhang Xutuo (), who was able to defeat some of the rebels, but even he was not able to succeed in suppressing them. In summer 613, Emperor Yang crossed the Liao River again and put Manchuria under siege. However, at this time, news arrived that Yang Su's son Yang Xuangan had rebelled near Luoyang. With the people disaffected by the Goguryeo campaigns, Yang Xuangan received much popular support and threatened Luoyang. Emperor Yang, in fear, lifted the siege on Liaodong and also ordered the southern offensive to be terminated, returning to Zhuo Commandery while sending Yuwen