【Xue Rengui's Expedition and Promise】——Success at the Gallop
When Xue Rengui was young, he was skilled in martial arts. During the Tang Taizong's campaign against Goguryeo, he was appointed as the vanguard after shooting through three layers of iron armor with a single arrow. On the eve of departure, he took off his jade pendant to reassure his worried wife, promising to return successfully within three months.
He achieved remarkable feats on the Goguryeo battlefield, contributing to a great victory for the Tang army in the Battle of Anshi City. Tang Taizong praised him for his successful combat, and his story led to the widespread use of this phrase among the people.
