The key to conquering the Ten Ribs was the two Qi Refining Furnaces that looked like human lungs. Entering the gas refining furnace and changing the direction of ice and fire combustion can neutralize energy in the ten rib channels, change the structure of particulate matter in the inner ribs, stabilize the rib channels, and thus cut off their energy delivery.

When this step is completed, the Void Cold Valley will be like a huge organism, originally full of vitality, but gradually decaying due to the loss of power, until the breath is dying, and finally all the messages or organs stop working, as if a person is dying.

However, because there is still a lot of energy stored in the Heavenly Instrument and the Iron Dragon, the overall operation of the Void Cold Valley can be maintained for a period of time, so this process will only happen slowly, so that Nangong Xiang can't detect it in time, and when he finds out that the situation is different, everything is too late, even if he wants to save it, he has lost the best opportunity, and the only thing he can do is to sit and wait in the strange cloud fantasy realm.

The goal is clear, but the implementation process is unpredictable and sloppy. Even if the Divine Soldier can successfully sneak into the furnace, it will not be easy to change the direction of the flames. The eight Warhawk generals were all strong in heart and quick in mind, but none of them could figure out in advance how to create this miracle.

After the key points were completed, Xi Mutong was about to reveal the mystery and said, "There are many substances in this world that can deal with fire, such as water and sand and stones. But they can only extinguish fires. When it comes to changing the direction of fire, the ideal tool is wind. As I mentioned earlier, there are huge blades on the top of the gas refining furnace, which are used to absorb wind energy and then fill it into the furnace to ensure that the ice and fire are never extinguished. ”

Lu Feng asked: "Xi Muxian, you mentioned the wind blade, but you also said that the wind blade has a high rotation speed, which is difficult for the human eye to catch, so how can you use it?"

Xi Mutong said: "Yes, if you only stay outside the furnace, it is indeed nothing, but after entering the furnace, the situation is different, we can find the control gate of the wind blades." ”

"Oh, I see!" Lufeng nodded.

Xi Mutong said: "The furnace top blade is the only tool that can be used to change the direction of the flame, but because of the special clay, even my immortal eyes cannot penetrate the furnace wall and penetrate the furnace, so I can't determine the specific location of the control gate." I don't want to make assumptions about the position, lest the gods waste their time because of me, but I can only tell you that the control gate consists of three handles, pull the black handle, and the blades turn left. Pull the white handle and turn the blade to the right. The red handle in the middle pushes forward, which accelerates the blade, and pulls back, which slows down the blade until it stops. The soldiers can pull the red handle back to slow down, but they must not pull it to the end in a hurry, so that the blades will stop suddenly, otherwise the air flow in the gas refining furnace will stagnate, the ice and fire will be extinguished, and the explosion will happen in the blink of an eye!"

"This ...... How precise the control of this strength must be!" "No matter how strong the Warhawk generals are, they can't help but be shocked. Compared with the previous battlefield experience of making bold and brave battles, the attack on the Void Cold Valley must be cautious and cautious, step by step, otherwise even if the enemy is far away, that battle may be completely defeated.

Xi Mutong couldn't give them much time to reminisce, and continued: "Remove the control gate, and there should be a circle of platforms close to the furnace wall for people to stand or walk around. Forty-five underground gas pipes are buried under each furnace, and I suggest sending a hundred people into them. Ten of the hundred divine soldiers were left to operate the control handle, and the remaining ninety people were in groups of twos and twos, all of whom went down to the ice and fire to find the entrance to the trachea. The place where the ice and fire burn is like an abyss, and they must not rely on the protective shield of the Hokage to find the bottom, which will not only waste time, but may also touch other mechanisms that we don't know. ”