Dugu Jing first learned of Yuwen Jing when he was very young. At that time, he was still a half-grown child, and his elder brother was teaching him how to train horses on the snowy plains. Their father came to discuss war matters with his elder brother, mentioning that a major upheaval had occurred in the Yuwen Dynasty. The border Vassal King was soon to ascend the throne as the new Emperor Yuwen, and they had received a letter from the Vassal King's Princely Heir, Yuwen Jing, proposing cooperation.
