Northern Han
Emboldened by his success to the south, Emperor Taizong decided to embark on a campaign to finally destroy the Northern Han. Leading the army himself, he brought his forces to the Northern Han capital of Taiyuan, which was laid under siege in June. An initial relief force sent by the Liao was easily defeated by Song. After a two-month siege of the capital, the leader of the Northern Han surrendered and the kingdom was incorporated into the Song Dynasty.