Several men were responsible for straightening and polishing the arrow shafts and arrowheads, while two women were responsible for boiling pine resin.

Along the way, the group collected quite a lot...

Ye Feng, meanwhile, began processing the two human leg bones…

Today's events deeply inspired him; Watanabe's sneak attack had nearly cost him his life.

Unfortunately, although he possessed a compound bow, it became useless once someone got close.

His close-combat skills were far too weak; against a trained fighter, he had no chance to fight back.

Even with his fish-scale armor, he couldn't withstand the enemy's punches and kicks.

The stun gun is a decent weapon for ambushes, but it consumes far too much power.

Ugly told the others that by killing himself, he could gain freedom and a big prize.

But it didn't say that killing them would grant him these benefits.

Therefore, Ye Feng guessed that his suffering was not over yet, and he still had to live for another 100 days.

Then we'll have to use this stun gun even more sparingly...

Moreover, he had never used this thing to shock anyone, so it was uncertain what effect it would have on a special forces soldier with such strong physical abilities.

Therefore, in order to increase his chances of survival and to face the impending and imminent crisis in Cairnster, he needed to make another powerful piece of life-saving equipment.

That is... a tinderbox—

This is a small gadget used by ancient people to preserve fire and provide light.

In martial arts films, it's a long, round object that's easy to carry...

As soon as you lift the lid and blow on it, a bright flame will immediately ignite.

When Ye Feng used the cannonball juice to breathe fire last time, some of the hair on his hands and the mustache around his mouth were burned off.

But actually, if you control the distance when spitting, your mouth is still quite safe.

The main problem is that juice easily gets on your hands when you're holding the fire.

This move is undoubtedly a powerful way to save your life.

But it's also a double-edged sword...

He only had a lighter as a portable fire source, so he could breathe fire if an enemy got too close.

There is a very high chance that your own hands will catch fire as well.

He didn't want to do something that would harm the enemy a thousand while also hurting himself eight hundred; losing a hand was no different from death for him.

So he made a long, thin fire starter so that when his hand was far enough away from the fire source, the safety hazard could be eliminated.

It is easy to hide, yet can be taken out unexpectedly.

Moreover, the tinderbox can be used as a lighting device at any time, so even when traveling at night, it's like having a small torch.

Once you make it, and then hold the cannonball juice in your mouth, it's like having a human flamethrower.

When faced with physical damage, skilled players may be able to dodge or withstand it.

But this is magical damage, and even elite special forces soldiers would be unable to cope with such an attack.

If you're not careful, you could end up like Watanabe, burning to the ground in an instant.

Thinking of this, Ye Feng immediately set to work, recalling the essential materials for making a tinderbox.

"Handmade paper, cotton, reed fluff, saltpeter, sulfur, rosin, camphor, phosphorus, bamboo tubes."

Of course, this is what a perfect tinderbox requires; in reality, you don't necessarily need that many.

Everything else is fine. The coarse paper, cotton, reeds, and other items are only used to help with fire, and there are many other things that can be used instead in the jungle.

Bamboo tubes can be made from these leg bones, and rosin can be replaced with pine resin, which will also burn sustainably.

Saltpeter is the main chemical accelerant for tinderboxes and is absolutely essential.

And phosphorus, because phosphorus has a very low ignition point, even without contact with excess oxygen…

Even just by opening the lid of the tinderbox, you can see specks of red light produced by the burning phosphorus powder.

This characteristic allows the tinderbox to light like a lighter, igniting instantly.

The addition of phosphorus not only improves the flammability of the tinderbox, but also allows it to be ignited without an open flame, meaning it ignites with a single breath.

The professional chemical term is "easily oxidized substance"...

Therefore, the most important components in making a tinderbox are these two chemical ingredients.

Ye Feng sat cross-legged on the spot, stroking his chin as he carefully considered alternatives.

Fortunately, he had a vast knowledge of plants and quickly thought of one.

That's taro, which they often eat.

The roots and stems of taro contain phosphorus, known as potassium dihydrogen phosphate, which is a foliar fertilizer. Extracting it can be used as a readily oxidizing agent.

"Okay, okay, there's only one more thing to do."

Ye Feng closed his eyes tightly, his brain like a high-speed spinning wheel, constantly filtering out any plants that might produce nitrate.

"Dandelions? No! Water plants? No! Tree bark? Still no!"

Damn it, what do you find saltpeter in? Where can you find saltpeter in the wild?

"Damn it, get the nitrate out here already..."

For a moment, while he was deeply meditating, his mouth started to mutter to himself.

This caused the busy crowd to immediately stop what they were doing and rush over to hear what he had to say.

They looked at each other, completely bewildered, wondering what Ye Feng was doing.

If you didn't know him, you'd probably think he was crazy.

"Sigh, brother...you..."

"Shh!"

Fu Changxiong was just about to step forward and touch it to ask something...

Liu Sisi immediately stopped her and made a shushing gesture.

He knew that Ye Feng was under a lot of pressure. Although he had never seen Ye Feng in this state before, he was sure that Ye Feng was thinking about something very important.

She said softly:

"Don't bother him, let's just do our own thing..."

With that, the group prepared to disperse and continue their work.

But just then, Ye Feng suddenly grinned, opened his eyes abruptly, and shouted…

"Salt water!"

Everyone was startled and shuddered.

Before they could even ask...

Then Ye Feng burst into laughter…

"I've got it! We have saltpeter all around us! Hahaha! I didn't expect it to be so easy, this is great!"

I'm not afraid of Cairns anymore! Hahaha…

Seeing his incoherent and somewhat deranged behavior, everyone frowned...

Tang Weiwei pointed at him and asked Liu Sisi…

"Is he... having mental problems?"

Liu Sisi patted Ye Feng's leg...

"Brother Feng, are you... alright?"

"What could be wrong with me? I'm perfectly fine!"

Ye Feng's mouth was practically stretched to his ears at that moment, his excitement was palpable.

"I'm telling you, I'm going to make a weapon of mass destruction! A weapon... that can kill Cairnster!"

Everyone remained silent, still staring at Ye Feng with worried and puzzled expressions.

Seeing their expressions, Ye Feng calmed himself down and then told them all his thoughts.

The group breathed a sigh of relief after hearing this…

"You scared me! I thought you'd gone crazy!"

"Exactly, he was talking to himself, like he was possessed."

Tang Weiwei and Liu Sisi complained...

Fu Changxiong asked curiously again:

"Brother, your idea is good, but where is the saltpeter you need?"

"There it is!"

Ye Feng smiled and pointed out the window…