"Dad, am I doing the right thing?"

Tang Hao nodded slowly, "Do you know the role of the heart?" The muscles that people use the most are the calves, and the calves are the root of all 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.

I feel like I'm like a light bulb, they're here to have a father-son relationship, I'm standing here, and no one pays any attention to me. Am I biological? How do I feel...... Am I adopted? Or was it picked up on the side of the road?

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

With the previous experience of wielding a hammer and careful observation, Tang San quickly mastered the method of pulling the bellows while sitting in Tang Hao's previous position, although it was still a little jerky, but under his careful attention, every force was from the calf. Sure enough, as Tang Hao said, not only did he save a lot of strength, but the effect was also better than before, I don't know how much.

Tang Hao took Tang San's casting hammer and said lightly: "Swinging the hammer with all your strength to cast can give full play to your strength, but in the same way, once the hammer goes down, the rebound force will also cause a great load on yourself, if you don't have a suitable method to guide it, not only will it be easy to hurt yourself, but it will also make part of the power lose and cannot act on the metal." You have to take a closer look at my movements below, which will be the key to whether you can beat this piece of pig iron to the size of a fist in a short time. ”

Taking a deep breath, Tang Hao's eyes became focused, and as Tang San pulled the bellows, the entire piece of iron had been burned red, and the blazing flames rose, making the room extremely hot.

Tang Hao moved, his movements seemed to be no different from before, with his legs with his waist, with his belt on his back, with his arms, when there was a bang, the hammer smashed on the iron.

When the hammer bounced up because of the reaction force, Tang Hao suddenly turned around, still calf force, the rebounding hammer had been picked up by him, waved in the air, with a strong wind sound, and a loud bang, fell on the iron again, this blow was not only extremely fast, but also the power seemed to be stronger than the first blow.

The hammer rebounded high, Tang Hao's movements and the amplitude of the hammer seemed to have reached a perfect fit, not sooner or later, just at the moment when the hammer was about to reach the highest point, the body drove the hammer to circle around and smashed down again.

Tang San's eyes lit up, this was clearly a method of using force to make force, using the rebound force generated by the collision between the hammer and the metal to turn it into the power of his next blow, the action was perfect and coordinated, avoiding the damage of the rebound force to himself to the greatest extent, but turning this force into a continuous blow. From the second blow onwards, the power of each blow exceeded Tang Hao's full strength, but it was still under his control.