Yi Wan was originally a novice in the fast travel department. When he was doing the Ruyi's Royal Love in the Palace mission, he couldn't stand Ruyi's warm torture and killed Ruyi, causing the world to collapse. He was punished by the Lord God to be a supporting role in the world of Zhen Huan's Legend and Ruyi's Royal Love in the Palace to sharpen his ambition.
The First World: The Legend of Zhen Huan-Pei'er
