Whenever a Soul Pet Master acquires a new soul pet, regardless of the level of the soul pet, they must spend a considerable amount of time raising the soul pet's stage.
That's why new soul pets usually cannot participate in formal combat directly. They need the Soul Pet Master to train them gradually, raising their stage to a certain level before they can truly play their role.
Under normal circumstances, the mentality of soul pets above the seventh rank is more or less mature. They won't sell their souls to humans until they die. This is the main reason why the soul pet market mainly sells juvenile soul pets below the seventh rank.
However, having this Memory Liquid solves this problem entirely!
Imagine Chu Mu's situation now. His strength is sufficient to defeat a ninth-rank monarch. After defeating the ninth-rank monarch and using this Memory Liquid, he can turn the ninth-rank monarch into his own soul pet, directly increasing his strength by a large margin!
