In the twenty-second body refining session with the hydraulic machine just now, the skill level of Vajra Indestructible increased by about one percent. This is almost equivalent to half a day's hard training with a plasma cutter.
This is because such training not only causes damage to his body tissues but also deeply stimulates his muscle fibers, thereby achieving a training effect.
And muscle training happens to be the main focus of refining Vajra Indestructible.
The Martial Monks in Shaolin Temple can withstand blows from sticks,
and it's not entirely due to the toughness of their bones or the thickness of their skin.
Seventy percent of the reason is actually because their muscles are hard enough.
In ancient times, there are even records of muscles being strong enough to block sharp arrows.
