What kind of legendary life did Xue, a famous Tang Dynasty scholar, have?

Leading troops for decades, he defeated the nine surname Tiele, surrendered Koguryo and defeated the Turks. All the allusions come from him, such as "the strategy of resting on the war", "Three arrows determine the Tianshan Mountains", "Braving Liaodong", "benevolent administration of Korea", "loving the people like the city" and "taking off your hat to repel ten thousand enemies". As the highest official, he was the governor of Gua, the right leader of Wei, and a captain representing the country, and was named Pingyang County.