However, during the battle, Jiang Bo did try to use internal force to increase his physical strength and attach domineering attack methods to his body. The result was obvious. A headbutt almost knocked down Aokiji who was using the iron block.

Without thinking too much, Jiang Bo adjusted his breathing and began to practice the second form.

The second move was to support the ground with the five fingers of both hands. Jiang Bo continued to practice lying on the ground. Andy felt that an inexplicable power from Jiang Bo was getting stronger and stronger.

Half an hour later, Jiang Bo discovered the difficulty of the second move. The same movements, but instead of supporting the ground with both palms, he used ten fingers and made changes to several important acupoints in his body. His physical strength was consumed twice as fast as the first move.

However, Jiang Bo would not give up for this reason. He wanted to complete the practice of Toad Skill as quickly as possible, and then open up the Ren and Du meridians to awaken his physique.

Three hours later, Jiang Bo's face looked a little grim, but he still completed the practice of the second form.

Seeing that Jiang Bo was exhausted, Ali offered him food, but Jiang Bo refused. This time he wanted to see how far his potential could go.

After another three hours, Jiang Bo's body was frozen and almost unable to move, and he collapsed to the ground. Ali asked him to rest, but Jiang Bo refused again.

Although he had little strength left in his body at this moment, his aura was like a rainbow, his internal strength was abundant, and his spirit was extremely excited. He wanted to practice the Toad Skill in one go.

After shaking his stiff body, Jiang Bo fell to the ground again.

Unlike the first three forms, when practicing the fourth form, Jiang Bo's neck swelled up with every breath, like a big toad. His arms and legs became thicker, like balloons being blown up, but the internal force lingering in them was extremely dangerous.

The stone slabs on the ground sank little by little. Ali knew that this was the ceiling of the sixth floor. He was really afraid that Jiang Bo would crush the stone slabs and cause a sensation.

At this time, all the important acupoints in Jiang Bo's body have been opened. An invisible internal force flows out from his body, surrounds Jiang Bo's waist and abdomen, flows to his chest little by little, and finally gathers at Jiang Bo's swollen neck and penetrates.

"Quack~" A huge toad's croaking sounded throughout the sixth floor, attracting the observation Haki of countless perverts from areas A and B. However, there was a stone slab more than ten meters thick in between, and no human's observation Haki could penetrate here.

After Jiang Bo roared out with all his internal strength, he could no longer hold on and fell to the ground. His swollen body slowly shrank and his swollen neck collapsed.

"Haha, it's not that difficult, right?"

Jiang Bo was going back to his cell after a big meal. It was already morning, and Hannibal was likely to come looking for him. He had to deal with Hannibal in person before coming back.

"I will try to open the Ren and Du meridians today. If I succeed, learning paper drawing in seven days will no longer be an obstacle for me." Jiang Bo thought to himself.