At the beginning, he crossed over to become the cannon fodder villain's father

"According to the requirements of the host, it is recommended that the host purchase the following items: 1. Thermite grenade. 2. High-frequency cutter (disposable). 3. Underwater breathing device (disposable). 4. Frogman bloodline (temporary)"

The system gives four different options.

Zhao Chengfeng looked over one by one.

【Name: Thermite Grenade】

【Type: Consumables】

[Efficacy: After use, it can instantly generate a high temperature of thousands of degrees, which is enough to destroy most targets. 】

[Remarks: For humanitarian considerations, please do not use on human targets]

【Name: High Frequency Cutter (Disposable)】

【Type: Consumables】

[Efficacy: Ultra-high frequency vibration, capable of cutting all known materials in the world]

[Remarks: There is nothing that a high-frequency cutter can't handle, if there is, then get another one! 】

【Name: Underwater breathing device (disposable)】

【Type: Consumables】

[Efficacy: After wearing it, it can absorb oxygen from water]

[Remarks: This thing is an old-time oxygen cylinder, don't be fooled by its appearance! 】

[Name: Frogman Bloodline (Temporary)]

【Type: Consumables】

[Efficacy: After using it, temporarily obtain frogman blood (24 hours), muscle strength, nerve reflex speed are greatly improved, and underwater breathing talent is obtained. 】

[Remarks: The king of cost performance in low-level blood, if you don't have money, you can definitely choose him. 】

After reading the introduction of these four props, Zhao Chengfeng realized that the props that can be bought with [-] system points are all consumables.

So was the single-use amnestic last used in the operating room.

Except for the underwater breathing device, which is worth [-] points, the rest of the four items are exchanged for [-] points.

Therefore, the frogman bloodline (temporary) was first ruled out by Zhao Chengfeng. He could only exchange for one of these things, so he didn't even need to think about it.

Then there is the underwater breathing device, although it is enough to exchange for two, but the light energy has a fart use in underwater breathing, it just delays death.

Although Zhao Chengfeng had disappeared for a long time, both the old housekeeper and Qin Ruxue would look for him everywhere.

He did not hide his whereabouts when he left, and he should be found soon.

But Zhao Chengfeng didn't like the feeling of entrusting his own destiny to others.

So the underwater breathing apparatus was also discharged by him.

The only remaining items are thermite grenade and high-frequency cutter (disposable).

These two props are destructive props. According to the description in the item introduction, both can destroy the top cover that seals the reservoir.

Zhao Chengfeng's eyes swayed back and forth between the two props, a little uncertain.

In the end, though, he chose the thermite grenade.

For no other reason, at this time, he is still carrying Xu Xiuya behind his back, and it is not convenient to control the cutting after switching to a high-frequency cutter.

Or choose a grenade to save worry and effort.

Zhao Chengfeng didn't have much knowledge of chemistry, but he also knew that thermite grenades were different from ordinary grenades.

Ordinary grenades rely on explosions, and then use dense steel balls and fragments to cause damage.

The thermite grenade is different, it hardly explodes, but the thermite carried in it reacts violently, generating a high temperature of thousands of degrees to melt the target.

In the closed water reservoir at this time, there is no need to worry about using thermite grenade to cause harm to oneself.

"System, confirm the exchange for thermite grenades!"

After Zhao Chengfeng finished speaking, the [-] system points were instantly cleared.

In his hand, there was an extra cylindrical object.

The thermite grenade is in the shape of a cylinder as a whole, about [-] centimeters long, with red ends, and the middle part is wrapped in silver-white metal.

While Zhao Chengfeng was holding the thermite grenade, an instruction manual appeared in his mind.

"Sure enough." Zhao Chengfeng laughed.

Then read the instructions for the thermite grenade.

He didn't want to hurt himself before he got out of trouble.

Moreover, the high temperature of thousands of degrees of thermite, once an accident occurs, it is not as simple as being injured.

It is hard to say whether the ashes will be found by then.

It didn't take long for Zhao Chengfeng to figure out how to use thermite grenade.

The red parts at both ends turned out to be superconducting magnets, which can be adsorbed on any metal surface, and then you only need to turn the silver part in the middle to set the detonation time of the grenade.

After that, you can find a bunker and wait for the grenade to work.

Zhao Chengfeng weighed the thermite grenade and felt its weight.

Then wait patiently.

At this time, the water level was still some distance away from the top cover, and he needed to wait for the water level to reach a suitable height before placing the thermite grenade.

While waiting, Zhao Chengfeng knocked on the inner wall of the reservoir, and a solid muffled sound came back.

This is because the reservoir does not protrude above the ground, but is sunken underground.

Zhao Chengfeng discovered this when he entered the factory building.

It is also because of this that he can only place the thermite grenade on the top cover, otherwise, even if the inner wall is melted, there will be a thick layer of concrete behind it.

Waiting in the dark for the water to rise is obviously not a pleasant job.

Every second spent is an extremely torturous experience for the parties involved.

Zhao Chengfeng raised his hand and touched a large metal plate without accident.

"Finally at the top."

Zhao Chengfeng let out a sigh of relief, and his mood immediately improved.

The waiting time before made him uncomfortable enough.

There was no light, no sound except the sound of water, Zhao Chengfeng was almost driven out of mania.

At the same time, the hatred in his heart for the black hand behind the scenes also increased rapidly, and soon reached the level of endless death.

He swore that he would find that person after he got out, and then let that person taste what he was like at the moment.

click.

Zhao Chengfeng adsorbed the thermite grenade on the metal top cover, and then turned the silver part to set a ten-second detonation delay.

After setting, Zhao Chengfeng swam to the other side of the reservoir with Xu Xiuya on his back.

The reservoir is very large, with a radius of 20 meters, there is enough distance for Zhao Chengfeng to avoid it.

laugh!
A strong light suddenly lit up in the darkness.

The thermite grenade expires and begins to detonate.

The large amount of thermite carried in it reacted quickly, producing silvery white sparks and a flame with a temperature of thousands of degrees.

In an instant, the metal top cover was burned red, and then took on the shape of lava, dripping molten iron continuously.

The body of the thermite grenade also fell off as the top cover of the adsorption position melted.

However, the thermite in it had already adhered to the top cover and continued to spread around.

Although the name is thermite grenade, it is mixed with many other chemical substances, which can make thermite react violently and spread to the surrounding area, increasing the damage area.

Looking at this scene, Zhao Chengfeng opened his mouth in shock.