And Mingyue and Xianyun, it is best that their strength can be stacked to the late-stage Nascent Soul level.
As for Ghost Soul.
Ghost Soul is located in a region of diabolism.
Such methods of using diabolic techniques to enhance puppet strength can indeed be utilized.
Therefore, the strength of Ghost Soul is actually the best to enhance.
According to He Song's guess, perhaps it only requires him to provide many treasures, in order to greatly enhance Ghost Soul's strength several times.
Ultimately, if He Song is willing to pay a tremendous price,
It is not impossible to enhance Ghost Soul's strength from the current Nascent Soul Early Stage to Nascent Soul Perfection.
Of course, these possibilities of enhancing strength
All depend on Qingfeng, Mingyue, and Xianyun, Ghost Soul proving themselves sufficiently valiant.
As long as their bodies can contain enough spirit power and possess sufficient strength,