Lack of immortal stone, Dan medicine, and practice of Gongfu are the status quo of all the lower immortals.
If there is only a shortage of fairy stones and Dan Yao, you can also practice slowly. Anyway, fairies have a long life, but if there is a lack of Gong method, even if there are fairy stones and Dan Yao, it is difficult to break through.
Therefore, among many resources, Gong is the most important.
Likewise, the merits of Kung Fu also determine the strength of the same realm.
If the skill of training is strong, then the combat power is strong, while the skill of training is weak, then...