}}. It was said that he was poor and was a farmer. Around the time that Tang dynasty's second emperor Emperor Taizong was set to launch a major campaign against Goguryeo in 644, Xue was planning to rebury his ancestors, when Lady Liu told him:

Xue thus went to meet the general Zhang Shigui ??? to volunteer for the army. Once he reached the front, on an occasion when the general Liu Jun'ang ??? was