to the ally Goguryeo. Yang believed Goguryeo to be undependable, but Feng Hong was not deterred, and he sent messengers to Goguryeo seeking aid and agreement to evacuate. In spring 436, Feng Hong sent messengers to Northern Wei to offer tributes, and declaring that Feng Wangren would arrive briefly. Emperor Taiwu, not believing in Feng Hong, refused the overture and prepared another attack. By summer 436, Northern Wei and Goguryeo forces both arrived at Helong. Because the people largely were weary about relocating to Goguryeo, the official Guo Sheng (郭生) opened the city gates and tried to surrender, but Northern Wei forces thought it was a trap and did not aid him, and Feng Hong killed Guo in battle. Meanwhile, the Goguryeo forces pillaged the city, and then escorted Feng Hong and his people to head east, after Feng Hong set fire to the palace. Northern Yan was now at its end, as Feng Hong no longer had any territory of his own. After evacuation to Goguryeo Northern Wei sent messengers to demand Goguryeo's King Jangsu turn over Feng Hong, but King Jangsu refused. However, his own relationship with Feng Hong was not good, for when he first welcomed Feng Hong to his land, he treated Feng Hong as an honored guest—but Feng Hong demanded to be treated as the suzerain and was angry that King Jangsu referred him as "the Prince of Longcheng" rather than Heavenly Prince. Despite this conflict, King Jangsu settled Feng Hong's people at Pingguo (平郭, in modern Yingkou, Liaoning), and then at Beifeng (北豐, in modern Shenyang, Liaoning). Because Feng Hong still viewed Goguryeo as a vassal and often looked down on its people, he continued to treat his people as an independent state, ignoring the Goguryeo laws and ignoring King Jangsu's orders. King Jangsu could not endure this, and he sent troops to seize some of Feng Hong's ladies in waiting, and also seized Feng Wangren as hostage. By 438, Feng Hong was so angry that he sent messengers to Liu Song, requesting that he be escorted to Liu Song. Emperor Wen sent the general Wang Baiju (王白駒) to Goguryeo, ordering Goguryeo to prepare to let Feng Hong leave. King Jangsu was unwilling to let Feng Hong depart, and so sent his generals to execute Feng Hong and his sons, although he gave Feng Hong an imperial posthumous name. In response, Wang attacked the