The ancestor of the Yuyao Xi clan, a once-reclusive medical family hidden in the mountains. A century ago, he emerged to save the world during the chaos of war, practicing medicine and dispensing remedies. He was revered by displaced masses as a Bodhisattva of salvation. His declaration of heaven's mandate helped the Helan clan become the people's favored choice. After the Helan clan unified the realm, Xi Hong was enshrined as the State Preceptor, a title passed down through generations. After his death, the Xi clan declined but later regained prominence by saving the current emperor's life.