The heavy crossbow failed against the giant beast!

The penetrating power is extremely strong. If it can penetrate the body of a giant beast, the arrow of the crossbow will explode directly, causing direct damage to the body of the giant beast!

This thing is simply a low-level armor-piercing bullet!

"This blue-grade delayed-explosion heavy crossbow requires expensive materials. Each one requires a blue-grade iron block and a blue-grade saltpeter," Ma Hongwei explained. "I asked Li Wenxi for the materials."

Blue-grade iron nuggets and blue-grade saltpeter...

Speaking of blue-grade saltpeter, Xu Xin remembered that he still had a piece in his hand.

At first, he used blue saltpeter as an air conditioner.

I don’t know how much blue-grade saltpeter Li Wenxi has in his hands now.

"Can we only make blue-grade?" Xu Xin pondered for a moment, "Can't we make green-grade?"

Green level may be mass-produced.

"Green-level ones can also be made, but the crossbow's own penetration and explosion are too weak, and it should not cause any substantial damage to the behemoth." Ma Hongwei explained.

"But if we attack ordinary mutants, it would be too wasteful. These heavy crossbows are consumable and cannot be recovered after the explosion. It would be better to use explosive crossbows or ordinary heavy crossbows. Ordinary heavy crossbows can be recycled."

Xu Xin nodded.

He hadn't thought much about this.

"So, this blue-level delayed-explosion heavy crossbow is also a consumable item?"

"That's right." Ma Hongwei nodded. "Every time you fire a shot, it consumes one blue-grade iron block and one blue-grade saltpeter."

Consumables?

If it weren't for Li Wenxi, such a thing would be unthinkable.

After all, the resources in other areas are still at a level that even blue-level armor can show off.

Consuming one blue-grade iron block per shot was too much for them.

But for District 188, these resources are not a difficult task.

After all, there was a wealthy young woman who could prospect for minerals and brought a whole mining team with her.

Although mass production is unlikely, it is not a problem to make a dozen or so as a weapon inventory.

With this weapon, when they face giant beasts like the giant anaconda in the future, at least they will not have to surrender, but will have some means of fighting back.

"This heavy crossbow is broken. It can't be fired with an ordinary tree house heavy crossbow, right?" Xu Xin asked.

Compared with the heavy crossbow bolt he had made before, this heavy crossbow bolt was much longer and a whole circle thicker, and could not be loaded into an ordinary heavy crossbow at all.

"Yes. It can only be loaded into a blue-grade metal super-heavy crossbow. Green-grade or wooden super-heavy crossbows will not work because the crossbow is very heavy. The heavy crossbow that fires it needs to have a strong firing force. It must be a blue-grade metal super-heavy crossbow." Ma Hongwei said, bringing Xu Xin to the window.

Xu Xin looked outside and saw an extra-heavy crossbow placed on the outer wall of the tree house.

The tree house super heavy crossbow was a heavy crossbow developed by Ma Hongwei before. Because only wooden heavy crossbows could be made at that time, even Xu Xin’s tree house has not been equipped with this heavy crossbow until now.

With a "click", Ma Hongwei loaded this unique heavy crossbow into the super heavy crossbow.

Each super heavy crossbow can only be loaded with one heavy crossbow bullet at a time.

"Brother Xin, I haven't tried the power of the blue-level heavy crossbow yet. Why don't you try it out?" Ma Hongwei patted the control panel beside him.

Each shot contains a piece of blue-grade iron and a portion of blue-grade saltpeter.

This experiment is not cheap.

However, the power of weapons must be understood.

"Okay." Xu Xin walked to the control panel.

Ma Hongwei's tree house is equipped with nearly thirty heavy crossbows, which is really exaggerated.

There were so many spots of light on the tree house that he didn't even know which super heavy crossbow he had just lost when loading it.

It was Ma Hongwei who chose it for him.

Xu Xin looked around.

There was nothing else around except bare trees.

So he just clicked on the ground not far away.

"Card!"

In an instant, a mechanical sound was heard outside the wall of the tree house, and then a heavy crossbow shot out at high speed!

Under the gazes of Xu Xin and Ma Hongwei, the two-meter heavy crossbow pierced obliquely into the soil like tofu!

Only one missing tail was left.

What a powerful penetrating power!

"boom!"

Before Xu Xin could finish his sigh, the crossbow exploded quickly under the ground!

A cloud of thick smoke rose from the spot!

At the same time, dirt and stones were flying everywhere!

Several trees around were affected by the explosion, and the nearest one was even blown out of the ground!

Thick smoke rose upwards, and at the same time, a large black hole was left on the ground.

This pit is really big, with a diameter of nearly two meters and a depth of even more than two meters.

Moreover, cracks appeared on the surrounding ground, extending for several meters!

A single shot from a heavy crossbow could actually create such a huge crater!

Looking at the scene in front of him, Xu Xin even felt like he was blasting a mine.

Burying the bomb underground and then detonating it to blow up the ground directly is just like blasting a mine!

Unexpectedly, the explosive effect of this heavy crossbow is so strong!

It is many times more powerful than the explosive crossbow!

"...How much explosives did you use?" Xu Xin looked at the big hole on the ground and turned to look at Ma Hongwei.

"Haha, I knew it would be incredibly powerful." Ma Hongwei was immediately excited when he saw how successful his weapon was. "You used quite a bit, Brother Xin! In addition to one part of blue-grade saltpeter, you also added nine parts of green-grade saltpeter, and ten kilograms of vine juice!"

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