Under a thousand feet of water, the pressure can be imagined. Every step Yi Yu takes is extremely difficult. Huge pressure comes from all directions, and the chest and abdomen almost explode. If it's not for the internal strength to skyrocket, it's almost impossible to move. Just a few steps out of the water, there will be blood gushing out of the seven orifices, and even a mouthful of blood from the throat is almost spewing out.

it's no wonder that many martial arts experts like to use the power of the river and the sea to harden their bodies and strengthen their internal strength. Under this kind of torture,...