A scrap collection station comes to mind

Item: War Tiger Mecha!

Introduction: The eighth-generation three-star manned melee mecha of the Qu human race has a 100-ton combat power and 88 sets of automatic combat skills...

Completeness: 50%

Repair: Consume 100 million wealth points.

…

——

According to the information on this Zhanhu mecha, the peak combat power is basically invincible under the Jindan realm. It also has a self-destruction device. Once the self-destruction explosion is activated, it can even damage Jindan. The existence of Dan realm.

It can be said that it is very powerful.

The repair cost 100 million, and Chen Muyu's current wealth value is relatively abundant, close to 600 million.

I didn’t feel distressed and just chose to repair it.

Wealth value -100 million.

…

——

The next day, before dawn, Hong Ze got up and stood guard outside Chen Muyu's room until Chen Muyu got up.

It was a matter of life, so Hong Ze had to be more careful, because he was afraid that something would go wrong, or that Chen Muyu would leave him and run away.

After cooking some noodles in the morning and packing the things they needed to prepare, the two of them left the village and went up the mountain again.

…

Chen Muyu was already familiar with the roads in the mountains, but Hong Ze's old bones slowed down his progress.

Near noon, the two finally arrived at Longtouling again.

It had snowed at night, and the trees and ground in the surrounding mountains and forests were covered with a layer of snow. Longtan Mountain was like a bride wearing a white wedding dress.

"You want to go in too?"

At the entrance of the cave, Chen Muyu turned to look at Hong Ze, who had already put on cold-proof clothes.

Hong Ze nodded slightly, "If you don't go in personally, I won't be worried. Brother, you haven't seen Long Yuanguo before. I'd better follow you in, so I can take care of you."

"You can go in, but if something happens to you, don't think that I will take care of you." Chen Muyu reminded you, it's up to you whether to go in or not. However, if you encounter danger, it is impossible for me to risk my life to save you. your.

Hong Ze nodded repeatedly, "Don't worry, brother, I know how to advance and retreat. If I can't handle it, I will come out."

Chen Muyu didn't say much. After all, this old man was still worth 400 million. If he died here, wouldn't his 400 million be in vain?

It wasn't safe to leave him outside. After all, there were bears in the woods.

"Let's go!"

Chen Muyu also put on cold-proof clothes, put on night vision goggles, carried a backpack, and took the lead into the cave.

This time Hong Ze's son prepared quite complete equipment. There were two bottles of oxygen in his backpack, which could be used as backup if the air in the cave was not good.

Hong Ze walked behind, holding a roll of thin fishing line in his hand, one end tied to the entrance of the cave, and he pulled it all the way into the cave.

Chen Muyu held a bottle of paint spray in his hand. Every time they reached a fork in the road, he would draw an arrow on the cave wall to mark it. This would ensure that they would not get lost in the cave.

The two people have a clear division of labor.

It was much more convenient to have night vision goggles. Although there was no light in the cave, the two of them could still see clearly.

This time I came prepared and was obviously much more efficient than the last time.

There are many forked roads in the cave, but if you walk on many forked roads, there is no way to go. You can only turn around and start again. These forked roads have been marked with different marks by Chen Muyu. In this way, they are orderly and not chaotic, so as to avoid repeated walking. of wrongdoing.

Identify a direction, move forward tentatively, and go deeper.

After about half an hour, Chen Muyu looked at the temperature display and it was already ten degrees below zero.

There was frost on the surrounding cave walls, but the two of them were wearing cold-proof clothes and did not feel cold. On the contrary, they were still a little warm after walking for a long time.

"Brother Chen, there is something really evil about this cave. The temperature difference between it and the outside is too big."

The surroundings were very quiet, and Hong Ze began to chat with Chen Muyu.

"well enough."

Chen Muyu replied perfunctorily, it snowed last night, and the temperature in the mountain was not high. The temperature outside the cave should be around zero. There is a temperature difference of more than ten degrees between this seat and the outside.

It's not particularly outrageous. After all, there is no sunlight all year round in the cave. It's cold and humid, so it's normal to be cold.

However, the temperature is continuing to drop, which is indeed very strange.

There should be a limit to coldness. It's no different here than in the north. It can easily reach -10 or 20 degrees Celsius. In winter in the south, the coldest temperature only hovers around zero degrees.

"I'm wondering if there is any natural cooling source in this cave. Otherwise, it would never be so cold..."

Hong Ze said to himself, this old man is quite old and well-informed, so he naturally has some opinions.

Chen Muyu agreed. Without a natural cooling source, there would not be such a big temperature difference between the cave and the outside.

However, neither of them could tell what the cooling source was.

He continued to explore forward, and walked for about two hours. He probably explored a distance of one or two kilometers, going around and around. Chen Muyu couldn't tell exactly where he was in Longtan Mountain.

The temperature has reached about minus 40 degrees.

There was thick ice all around and the ground was very slippery. Both of them wore ice boots with nails over an inch long, but despite this, they still walked carefully.

The cold-proof clothing has already turned on its self-heating function. This thing is high-tech. Although the conditions are very harsh, Chen Muyu does not feel cold at this moment.

However, the old man Hong Ze seemed a little unable to hold on. The oxygen content in the cave was relatively low, and he had already begun to absorb the oxygen he brought with him.

Although the cold-proof suit is generating heat, it needs batteries. Hongze only brought eight batteries, and now two of them have been exhausted.

Chen Muyu is better than him and has just started using the first piece.

For Hong Ze, he had to reserve enough power for the battery when he went out, otherwise he would die of cold on the way back if the battery ran out.

Chen Muyu is right. Just because your clothes can withstand temperatures of minus 100 degrees Celsius does not mean that people can wear them and move around freely in a low temperature environment of minus 100 degrees Celsius. There is a very big difference in this.

Just because clothes can withstand low temperatures does not mean that they can completely isolate the temperature. The human body is very fragile in low temperature environments.

Hong Ze now understands it deeply.

"How about you go out first?" Chen Muyu asked.

Hong Ze stubbornly shook his head, "If we walk in for another half hour, if it doesn't work, if I go out again, I still won't believe it. Can't we walk to the end?"

Half an hour later.

minus 60 degrees.

"Lao Hong, are you sure the Long Yuan Fruit grows here?"

Chen Muyu had to ask again. The environment of minus 60 degrees can be said to be absolutely harsh. Although plants are cold-resistant, they have limits. What kind of plants can grow in such a cold environment?