Besides Bone Training Skill, there is another method, which is to learn from eunuch Zhao.
After castration, eunuch Zhao's bones continue to develop for a longer time, but the downside is that it leads to osteoporosis. Obviously, eunuch Zhao has solved this problem through other means.
But the problem is, Xu Qing is not crazy.
Even if he was given the Sunflower Manual, he wouldn't want to castrate himself.
Now, Xu Qing's Martial Arts seem quite good, he stands out among his peers, but most of this can be attributed to his inherent advantage that boosts his learning progress.
His current problem is about his limit.
Scoring a hundred on a test doesn't mean he can solve the problems beyond that score.
That's a different issue.
Even with the Secret Medicine of Bull Demon Strong Fist, Xu Qing is limited by his physical constitution, making it difficult to reach the power level of King Lin.
Having strength but no bone support could even lead to injury when punching with full force.
