Looking at Tang San, who was sweating like rain, Tang Hao finally made up his mind.

"Stop. Tang Hao said.

Tang San put down the hammer in his hand and took a slight breath, quietly urging the Xuantian Gong in his body to breathe in order to restore his physical strength. Tang Hao walked up to Tang San, took the hammer in his hand, and then looked at the reddish iron burning on the stove, "Beating like you, even if it takes a year, it won't make it the size of a fist."

Tang San raised his head and looked at his tall father, "Then what should I do?"

Tang Hao said coldly: "Tell me, when you swing the casting hammer to hit it, where is the first place in your body to exert force?"

Tang San thought for a moment and said, "It should be the waist." Pull the back from the waist and then the arm to pick up the casting hammer?" Tang Hao didn't affirm or deny Tang San's statement, and continued to ask, "What is the most important place in the human body besides the brain?"

It's the heart. Tang San replied without hesitation. The heart and brain are also instantly fatal places, and the brain is protected by the skull, but the heart is only skin and muscles. As a disciple of the Tang Sect, he is very clear about the structure of the human body, and piercing the enemy's heart with a hidden weapon is the most effective and concise deadly method.

Tang Hao paused for a moment before saying, "Then tell me again, a person has several hearts." ”

"Huh?" Tang San looked at him in surprise, a little confused. How many hearts do people have?

"Answer me. Tang Hao looked at him coldly, the oppressive force of his body and breath made Tang San a little breathless.

"One.

Tang Hao shook his head and said, "No, you are wrong. Remember, there are three human hearts, not one.

"Three?" Tang San looked at Tang Hao dumbfounded, not understanding what he meant.

Tang Hao reversed the casting hammer in his hand and touched Tang San's two calves with the handle of the hammer, "Here." The muscles in the two lower legs of the human being are the second and third hearts. If a person wants to exert all his strength, then it must be the result of three hearts working at the same time. Therefore, when exerting force, it is not starting with the waist. Three hearts are the starting point. ”

"When your heart is beating rapidly, start from the two lower legs, the power is uploaded, to the thighs, through the waist, back, arms, and finally released. That's the full blow. The heart exerts force, and the waist is the axis. Look. The casting hammer in Tang Hao's hand was slightly topped, making Tang San take a few steps back, and at the same time, the hammer in his hand had been turned back, with a low shout, his body was half turned, his feet were clasped on the ground, and the two calves exposed outside the tattered trousers were instantly tensed, and the whole person was like a tiger ready to attack, his legs exerted force, his waist turned back, and the casting hammer had been brought back invisibly, when there was a loud bang. It landed heavily on the red-hot piece of pig iron.

Tang San could completely feel that this was just a process of human body exerting force, Tang Hao had no internal force, let alone the release of martial soul power, this was completely the power of the flesh, and the piece of iron that was still red before was completely smashed and collapsed by nearly a third, and the deformation was extremely obvious.

"Using the calves to exert force, connecting the strength of your body into a whole, is for full strength. The hammer in Tang Hao's hand was still in Tang San's hand, "You come once." ”

"Good. Tang San never thought that forging would have such a knock. This method of exerting power is not just used in forging. It should also be able to be used in his own Tang Sect martial arts.

Holding the handle of the hammer with both hands, learning Tang Hao's previous posture, Tang San's eyes stared at the red-hot iron block, Xuantian Gong slowly moved, deep into his calves, and his feet were tightly clasped on the ground.

Tang San shouted, the strength of his legs and Xuantian Gong were at the same time, the power exploded from his calves, spreading instantly, and his waist rotated, driving his back, to his shoulders, and then to his arms. He clearly felt that his strength seemed to have become stronger than ever, starting from the eruption of his calf to the end of his arm picking up the hammer, his body seemed to be carried up by this force.

One by one, the hammer smashed accurately on the iron block, making a loud noise.

Tang San's entire body was lifted off the ground with his feet due to the movement of the hammer, and he stumbled forward, the hammer rebounded, and Lin Jie stepped forward to hold Tang San.

Although there were Xuanyu hands on each other, there was no problem on the hands, but the arms were shocked by this rebound force for a burst of soreness, fortunately, Xuantian Gong operated in time, and this sour feeling gradually disappeared.

The effect was obvious, although Tang San had attached Xuantian Gong because of his age, the effect of this hammer was not as obvious as Tang Hao's, but compared to his previous percussions, the effect of this hammer was even enough to resist the dozens of hammers before.

Seeing Tang San's movements, Tang Hao didn't give an evaluation, but judging from the hint of surprise that flashed in his eyes, Tang San obviously did better than he expected. Tang Hao didn't expect that Tang San would be able to master this method of exerting power in such a short period of time.

How did he know that Tang San had been cultivating Tang Sect martial arts, not only did he have the foundation of Xuantian Gong, but also controlled the crane and captured the dragon, the ghost shadow trail and the Xuanyu hand, making his coordination ability far superior to that of his peers. His own comprehension is not bad, and the skill of this force is naturally easy to master. Of course, this is the first time after all, and he is not yet proficient in using it.

"Dad, am I doing the right thing?" Tang Hao nodded slowly, "Do you know the role of the heart?" The most used muscle in people is the calf, and the calf is the source of cutting strength. Using the strength of your calves well will give you a lot of strength. ”

Saying that, Tang Hao walked to the bellows and sat down, and pulled out something made of pig iron from under the bellows, which were two pedal-like objects, Tang Hao connected him under the bellows, and pulled the bellows with both hands, "In casting, the role of the bellows is also very important, the metal is fully burned, and it can be better forged, because that will make it tougher." And any piece of metal, even if it is a metal with many impurities, it itself has a soul, once the temperature is not enough, the force is too great to break it in the forging, then, even if it is re-melted and forged, this piece of metal is just a scrap. So, when you're hitting the iron with all your might, be sure to keep it warm. Pulling the bellows, which also uses the calf to exert force, can not only reduce the consumption of force as much as possible, but also maximize the effect of the bellows.

Feet on the two pedals, suddenly exert force, starting with the legs, the whole body quickly bounced back, both arms in the natural drive to open the handle of the bellows, the legs from straight back to bent, and then send the handle back. Back and forth, the bellows were running at full strength, Tang Hao's movements didn't look fast, but each stroke made the bellows' ability to the extreme, under the leadership of the calf muscles, the body and the bellows formed a special rhythm, the flames suddenly rose from the furnace, and the iron was suddenly burned red.

"You pull the bellows, follow what I just did. Tang Hao gave up his position to Tang San.