About a month later, the Crystal Demon Princess Belle finally contacted Long Yi, informing him that the Crystal Cores for the Dragon Clan had been completed. The creation of the Crystal Cores was completed half a month earlier than Long Yi's estimate, which was indeed a piece of good news, considering nobody knew when the Black Dragon army would march in.
Upon his return from the Crystal Demon Plane, Long Yi immediately began the adaptability trial of the Dragon Clan's Crystal Core.
Long Yi did not place the Crystal Cores on the forehead of the Dragon Clan members, but on their chests, as it was the area where the Dragon Power concentrated most, making it a more effective location.