Minos was the first to begin his integration and, as expected, he was the fastest of his group to finish the process.
Having done something similar other times in the past, he connected the silver needle with golden inscriptions in place of one of the bones in one of his hands, gaining a lot in the process.
The body part of a True Celestial integrated perfectly with Minos, causing his cultivation to rise to the peak of level 121. Even though he wasn't able to break through his current limit, he reached the peak of that level, one step away from becoming a true level 122 cultivator.
In addition to the improvement in terms of spiritual power, Minos' main gain was a new skill, as well as the strengthening of the Incorruptible Heart, Nautilus' Compass, and Infernal Crown skills.