Ye Tianchen had used the "Bone Transformation Skill" passed on to him by Zhang Yide to transform into the appearance of Ah Pi. This "Bone Transformation Skill" was incredibly sophisticated, unlike any ordinary Disguise Skill. It altered a person's form from the bones outward, changing not only the person's appearance and physique but also the entire temperament. Tianchen thought that unless one was an absolute top-notch expert, the skill's intricacies would be impossible to detect. It was extremely practical, and it seemed he would have many uses for the "Bone Transformation Skill" in the future.