After preparing everything, Xu Xin carried the stone spear and entered the underground cave.

He is a little sensitive to the word "underground" now, so even though Coco told him that there is no danger down there, he still cheered up and refilled himself with red berries and oranges.

When Xu Xin first entered the cave, he looked forward. The cave was very narrow, probably only a little wider than his shoulder width. The small space could not even allow two people to walk side by side inside.

The direction of the hole is not forward, but slopes downward. As you follow the hole, Xu Xin's position will only get further and further away from the ground.

On both sides of the passage are pitted earth walls, which look like a passage dug out by humans.

Xu Xin saw the end of the road at a glance. The end of the cave was only a few hundred meters away from him.

"Strange, a dead end?" Xu Xin said doubtfully.

He also checked the surrounding walls along the way, thinking that there would be caves leading to other directions on the cave walls, but until he reached the end of the cave and touched the earth wall at the end with his hands, he found no other passages.

The end of the cave is no longer sloping downward, but flat land. Xu Xin calculated that his current position is about twenty or thirty meters above the ground.

He lowered his head to look at Coco, and saw that Coco was at his feet, pawing the ground with his little paws.

Xu Xin looked intently and saw that the color of the soil was slightly different from the surroundings. If it weren't for his night vision ability that made him feel like he was in daylight in the dark, even with a torch, it would have been impossible to see this.

The different colors of the land.

This soil has been loosened.

The gold treasure chest must be buried here!

"Okay, Coco, leave it to me!" Xu Xin carried Coco, who was digging hard, to the back, and took out the stone shovel, pointed at the land of different colors, and started digging.

"Hey!" By accident, the soil excavated by Xu Xin splashed all over Coco. Keke screamed dissatisfied, shook the soil off her body, jumped over and hugged Xu Xin's calf.

"Haha, I'm sorry Coco!" Xu Xin couldn't help laughing. She reached out and touched Coco's head. She felt that there were still particles of soil on its little head, so she patted it and said, "I'll give you a bath when I get back!"

"Hey!"

Xu Xin continued to dig, but until the depth of the pit reached his waist, nothing was dug out.

He looked at the soil in the pit. As he dug, the soil gradually turned red. Although it was not very obvious, Xu Xin could still see it easily.

"Is there really no danger?" Xu Xin hesitated a little. The soil under his feet seemed to be soaked in blood, which reminded Xu Xin of the blood-red threads and blood-red barbs on the dark green vines, as well as the blood-red petals and blood-red petals of the piranha just now.

Stamens.

He sighed, touched the little guy's head and said, "If something happens here, we will die together."

"Hey!" Coco hugged Xu Xin's calf with one paw, and patted her chest with the other paw, as if to say, believe it, if it says there is no danger, there is no danger!

He decided to continue to believe in Coco.

We have come this far, it would not be good to give up halfway.

Xu Xin continued to dig, but Xu Xin did not dig down all the time. Instead, he dug up diagonally like a cave entrance, dug out a way for him to walk up, and spread the excavated soil flat on the passage.

, don't let the dirt block his way out.

First, leave a way out for yourself. If the dig is very deep, wouldn't it be difficult for him to come up?

When he continued digging until the depth of the hole was almost the same as his height, his shovel suddenly hit something hard and made a sound different from the collision of stones, as if it was something made of metal.

Xu Xin's eyes lit up.

Is it a treasure chest?

He increased the speed of digging and quickly cleared the soil under his feet.

There was indeed metal under his feet, but to his disappointment, the metal was not gold, but iron.

I don’t know how long this iron object has been buried in the soil, and there is a layer of dark red rust on the surface.

Xu Xin cleaned up the soil around the exposed iron surface, only to find that it was not a gadget, but an underground iron gate!

An iron door leading deeper underground!

"How could it be a door?" Xu Xin looked at the rusty handle and muttered to himself, "An iron door leading to the underground space?"

This iron gate gave him the same feeling as the manhole cover on the side of the road, but the manhole cover was round, while the rusty iron gate was square, with a door handle that was also made of iron.

He dug around and found that the surrounding soil was still dyed red, completely different from the red soil Xu Xin had seen before.

Xu Xin reached out and grabbed a handful of soil.

[Contaminated soil (ash): Soil infected by unknown forces is useless to survivors. 】

Sure enough, there is something wrong with the soil.

Throwing away the dirt in his hands, Xu Xin looked at the iron gate.

I have no choice but to go down.

He dug out an area where he could stand, reached for the door handle, took a deep breath, and then pulled it up with all his strength.

The iron door was very thick, but fortunately there was no lock. Xu Xin, who had strengthened twice, used all his strength to finally pull the iron door slowly.

The rusty iron door made a sharp sound and opened a gap.

Before Xu Xin could increase her strength, a strong and unpleasant smell came out of the gap and got into Xu Xin's nose unexpectedly.

"Ugh..." Xu Xin retched, her hands loosened, and she heard a "bang" sound, and the iron door that had just opened a gap closed again.

Even Coco screamed in disgust at the smell and retched.

"What's in here? Why does it smell so bad!"

Xu Xin suffers from mild pharyngitis. He can't help but feel nauseous when he smells a certain unpleasant smell. However, this nausea has nothing to do with his pharyngitis, because the smell under this iron door is obviously far beyond normal.

Human tolerance range!

This is really stinky! It’s like spoiled canned herring with hairy sour bamboo shoots. It’s a taste that is completely unacceptable physiologically!

With no other choice, Xu Xin repeated his old trick and once again used his clothes as a mask to cover his nose.

Holding the rusty handle again, Xu Xin exerted all her strength, and with a teeth-searing sound, the iron door was opened a crack again.

Holding back the feeling of nausea, Xu Xin increased her strength.

"Give-me-up-!!"

"Bang!!" The iron door was turned over and hit heavily to the other side.

A burst of red gas came up from below, and the unpleasant smell instantly filled Xu Xin's nasal cavity.

Xu Xin couldn't bear it anymore and rushed to the passage above, pulled the clothes off her face and vomited out.

It stinks, it really stinks!

Xu Xin felt that the smell in this door was scarier than piranha! This was simply a biochemical weapon!

Coco also scratched the cave wall with her little paws and made retching sounds beside him.

No, this hole is full of this smell!

Xu Xin directly picked up Coco and rushed to the ground, breathing in the fresh air in the jungle.

He had never felt that the air in the jungle was so fresh, and he even felt that the faint scent of piranha floating around him smelled so good.

After a while, Xu Xin gritted his teeth. You can't give up just because of the taste!

He looked solemn and solemn, preparing to really enter that smelly iron gate this time.

Just when Xu Xin was about to go down to the cave entrance again, he suddenly stopped and looked at the hole that he had enlarged with twitching eyes.

A stream of light red gas slowly floated out from inside, spread around the entrance of the cave, floated to Xu Xin's side, and got into Xu Xin's nose.
Chapter completed!