Thirty-eight years ago, the Helian, Shangguan, Gongsun and Xiahou families were equally famous, with the Xiahou family taking the lead. The two secret techniques of the Xiahou family gave the Xiahou family a status as the most powerful in the world. However, not all people can practice the two secret techniques of the Xiahou family, the Return to Childhood Technique and the Infant Returning Technique. In the past hundred years, very few people have been able to practice these two secret techniques at the same time. Xiahou Pei, who was the patriarch of the clan, practiced two secret techniques at the same time and went into seclusion. However, after the heads of several other families and martial arts sects learned the news, they were worried that Xiahou Pei's successful practice of two secret skills would pose a threat to the martial arts, so they planned to eradicate the Xiahou family. That night, all 138 members of the Xiahou family died under their butcher knives, and the Xiahou family's manor was filled with blood.