Fusion! Pei Yan and Pei Jin must achieve synchronization in both body and mind, and undergo adjustments through emotional resonances such as joy, anger, worry, thought, sadness, fear, and surprise, to achieve the ideal state of fusion.
This is not difficult for siblings with a close relationship and the same growth experiences, and this is why the Child of Origin selects relatives with blood ties. Unfortunately, the time for their fusion training is too short, and they are unable to quickly control their emotional fluctuations to synchronize. The investigation hall, unlike the Magic Realm, lacks external instruments to accelerate this fusion process, so they must rely on Ye Ruozai to delay time while they hide in parallel space to calmly and peacefully complete this process.
