become particularly wasteful, and that he no longer felt bound by moral principles. In 610, Emperor Yang visited Jiangdu again, and this time elevated Jiangdu's importance so that it effectively became a third capital. When Emperor Yang was visiting Ashina Rangan in 607, a messenger from Goguryeo's King King Yeong-yang to Ashina Rangan happened to be present, and Ashina Rangan introduced him to Emperor Yang. Emperor Yang ordered King Yeong-yang to come visit him, offering to reward him if he did so and to punish him if he did not do so. King Yeong-yang did not respond, and by 611, Emperor Yang, insulted by the lack of response, prepared a campaign against Goguryeo. With Sui appearing to be in its prime, both governmental officials and the people were initially in support of a campaign to conquer Goguryeo. In spring 611, Emperor Yang went to Zhuo Commandery and announced the campaign against Goguryeo. Several hundred men were conscripted, and it was said that even before they could get to Zhuo Commandery, disease and fatigue had already caused much loss of life. In response, a number of conscripted soldiers deserted and became agrarian rebels. Also in 611, angry that Western Tujue's khan Ashina Daman, while nominally submissive, had refused to visit him, Emperor Yang had Pei Ju persuade Ashina Daman's subordinate khan Ashina Shegui () to rebel against Ashina Daman, promising to give him a Sui princess in marriage. Ashina Shegui thus rebelled against Ashina Daman, forcing Ashina Daman to flee, first to Gaochang, then to Sui. Emperor Yang accepted Ashina Daman's submission, and thereafter divided his people into three groups, while leaving Ashina Daman as titularly khan, although he never allowed Ashina Daman to return to his people. By 612, the soldiers had been gathered at Zhuo Commandery, and Emperor Yang launched his attack, attacking a number of cities in Goguryeo territory, but targeting mainly at the important city of Liaodong (遼東, in modern Liaoyang, Liaoning) and Goguryeo's capital Pyongyang. However, contrary to the desires of the generals, Emperor Yang ordered that their tactical decisions must first be submitted to and approved by him before they could be carried out. Thus all the Goguryeo forts and cities were able to withstand Sui forces and thus there was not much chance of Manchuria being successfully conquered. Emperor Yang, however, made a new plan to keep the Goguryeo forts at bay while sending