The day of the big test is set for next month, and Qin Hao has already handed over the matters of the big test to Lin Xueer to handle it, and he has acted as a handyman.

In the exercise room jointly built by Nejin and Boron Jin, Qin Hao practiced his own abilities after playing Chonglongquan to warm up.

For the operation of the thin line, Qin Hao is already pure and innocent, with the ability of fire attribute, wood attribute, soil attribute, and water attribute, Qin Hao's application is only on the surface.

The book "On the Development and Variation of Ability" that Qin Hao had read a long time ago has still benefited a lot.

Following the train of thought in the book, Qin Hao learned from other things, and soon had an idea.

"What if you combine various abilities with Dragon Fist?"

Just do it. The moment Qin Hao punched the Dragon Fist, he activated the fire attribute ability to compress the flames in the fist and smashed out with one punch.

Just hearing a "boom", a fist-shaped flame continuously penetrated dozens of ordinary steel plates used to measure strength, and finally another five centimeter deep fiery red dent was smashed on the wall of the practice room.

You should know that Qin Hao's practice room is made of Niebron alloy!

"The power of this punch is too strong!"

Qin Hao marveled and tried to combine other abilities into the Dragon Fist, but only the fire attribute could achieve such an effect, and the abilities of other attributes had no response.

"Not bad, at least one succeeded."

Qin Hao gave his newly developed unique trick a name, "Fire Dragon Fist", although it was a second-degree, but it was in line with Qin Hao's temperament.

"Since abilities can be combined with boxing, can you combine abilities with abilities?"

Qin Hao's brain hole turned again.

Qin Hao tried to add flames to the thin line he separated, and the thin line became sharper. Wherever the thin line passed, there would still be burning marks. The killing effect and power were obvious. Promote.

But Qin Hao wasn't very happy, because this could only be regarded as an improvement, not a development, and there was no breakthrough improvement like the Fire Dragon Fist.

After that, Qin Hao tried to mix and match the abilities of various attributes, and tried many times.

In addition to the combination of water and fire, a large amount of water vapor is evaporated; the combination of fire and wood makes the flame a little bigger; the combination of wood and soil makes the forest grow more luxuriantly, nothing special.

Suddenly Qin Hao thought of high school chemistry knowledge. Water is composed of two elements, hydrogen and oxygen, and the chemical formula is H2O.

In water under ultra-high temperature conditions, the hydrogen-oxygen bond will break to form hydrogen and oxygen. Hydrogen is very easy to burn, and oxygen is an excellent combustion-supporting gas. The two mixed gases will deflagrate at high temperatures.

Qin Hao became more excited as he thought about it, and immediately experimented.

He condensed a small water ball with his left hand, then released a fireball with his right hand, wrapping the water ball without touching it, and then began to continuously heat and pressurize the fireball outside.

When Qin Hao felt that it was almost the same time, he didn't want the fireball to "boom", and a powerful force that destroyed the world and the earth broke out!

Qin Hao, a celestial powerhouse, was blown away and flew backwards, hitting the wall severely before stopping, and the entire underground training room collapsed in an explosion.

The violent vibration spread from underground to the ground.

The entire central hall, together with the central square, began to shake violently.

"Earthquake, bad, earthquake!"

People yelled and fled outside the hall. If the system hadn't integrated the beams and pillars of the hall into a whole, the hall would have collapsed at this moment.

When the shaking stopped, the whole hall became a mess. People found that the passage leading to the underground exercise room had collapsed, and they all screamed in cold sweat.

"The king is down here, let someone come, hurry up!"

Xiao Xun'er was almost crying, she yelled, and dug down with her bare hands.

When everyone was desperately digging down, Qin Hao himself crawled out from below.

"Great, the king found it!"

"My lord, are you okay?"

The crowd gathered in a group and asked anxiously, Qin Hao waved his hand quickly, "It's okay, it's all gone!"

Everyone saw that the signing was indeed fine, and then they dispersed.

After everyone left, Qin Hao took out a scarecrow from his arms and his eyes lighted up.

In the explosion just now, the Scarecrow blocked two fatal injuries for Qin Hao. Qin Hao really did not expect that a small fireball plus a fireball would explode with such power.

"This must be studied carefully, and done well, it is simply a big move!"

Soon Qin Hao figured out what was going on. It turned out that his initial assumption was only a small part of the entire chemical reaction.

Under ultra-high temperature, the hydrogen-oxygen bond breaks to form hydrogen and oxygen, which then produces a deflagration effect and releases a lot of energy.

But after the deflagration?

After the deflagration of hydrogen and oxygen, water is formed. At this time, the original ultra-high temperature has not yet cooled, and the huge energy generated after the previous deflagration will cause the temperature to rise again. Under such conditions, the newly formed water will continue to last. The reaction, so repeated, the energy continues to stack, until it exceeds human cognition.

Thinking of this, Qin Hao couldn't help being frightened into a cold sweat.

"Where is a chemical reaction? This is a nuclear reaction at all!"

After thinking about this episode, Qin Hao also understood why fist-sized fireballs and water **** would produce such great power.

This is a small nuclear bomb at all!

But having said that, if he could master this trick, Qin Hao would be like a god.

"Naruto rubbed spiral pills, but I rubbed nuclear bombs!"

Qin Hao became more excited as he thought about it, no, he couldn't wait, he must master this trick as soon as possible.

But this time, Qin Hao didn't dare to practice in Noah City. It would be embarrassing if he accidentally "nuclearly leveled" Noah City!

"Tell the princess, I don't have to wait for me to eat. I have something to do, and I may not be here these days!" Qin Hao gave Xiao Xun'er an explanation and rode out of the city on the hill.

Qin Hao let Xiaoshan ran for hundreds of kilometers before stopping.

Qin Hao feared that some survivors would be affected nearby, so he released the Vine Armour Army and the Golden Army, taking Qin Hao himself as the center, pushing it outward for 20 kilometers before implementing a blockade.

After doing this, Qin Hao entered the zombie farm again, planted a lot of scarecrows, and put them on his body to save his life.

At the beginning of the test, the fireball was still wrapped in the water ball, and then heated and pressurized.

"Oh!"

Qin Hao was blown out again, patted the dust on his body, and continued!

In the next few days, there were loud noises, earthquakes, and heavy smoke in this area.

Many survivors who passed by nearby thought it was a volcanic eruption!

"Weird, there should be no volcanoes around here, looking at the map!"

"Maybe it's crustal movement, maybe a newly formed volcano!"

After some discussion, the survivors wanted to go in and find out, waiting for them to be blocked by the Vine Armour Army and the Golden Army.