Just when he was about to say something, Li Wenxi suddenly spoke in the group.

"Everyone, I found saltpeter. We can make ice!"

More than two hours had passed since Xu Xin had made the deal with her. It seemed that she had already contracted a mutant beast and returned to the tree house.

Li Wenxi's words immediately diverted the attention of the group.

Wen Guixin: "Saltpeter? The saltpeter that can make ice?! Wen Xi, I want it. Sell it to me, sell it to me. I'll trade it with you for blue-level resources!"

Ji Chaoyang: "Did you find much? If not much, we can use them in turns. Saltpeter can be used repeatedly to make ice. A small amount can meet the needs of many people."

Qin Yunlong: "Is it the saltpeter, the raw material for black powder?"

Wang Lei: "That's probably the case, but without sulfur, we can't make gunpowder."

Qi Xuefei: "Do I have a share too? Many medicines also need to be kept at low temperatures."

Li Wenxi: "Everyone gets a share, but even if I mine all the saltpeter, there's still less than 100 kilograms. If you want it, I can only sell you 10 kilograms each. I have to keep some for myself."

It seems that she still knew how to hide it and did not say to him "Anyway, it's enough". However, the saltpeter was weighed by kilogram, so it seems that she only wanted to provide green-grade saltpeter.

The group was very lively, and everyone was asking Li Wenxi about saltpeter, but Xu Xin was not interested. He had blue-grade saltpeter, which was more than enough for refrigeration purposes only.

However, he was a little curious about whether Li Wenxi's contract with the mutant beast was successful, so he directly sent a private message to ask, "What animal did you contract with?"

Li Wenxi was busy negotiating the price with others and did not reply to him. Half a day later, he suddenly called Xu Xin via video.

Behind her in the video is a mutant bison that is several times larger than the mutated Silver King Mimi. The cow's hair is now covered with blood-red patterns.

It is normal to be big. Large herbivores are generally larger than carnivores.

The largest species of bison on Earth, the Gangetic Gaur, can easily weigh over a thousand kilograms, with the largest weighing up to a ton and a half. Furthermore, with a very low body fat content and a body composed entirely of muscle, the Gaur is incredibly strong, and a charging attack can pack a powerful punch.

The disadvantage is that they are very bulky. A bullfighter can use a piece of red cloth to make a bull run into a wall without any weapons. Therefore, if it comes to contracting thugs, Xu Xin still prefers natural hunters such as cats or bears. Cows are better for carrying things or plowing the fields.

"Look, I listened to you and contracted a cow! I can ride it and carry a backpack on it, and it's much faster than I can walk by myself. It's so powerful!" Li Wenxi looked very excited at this time and was very satisfied with her cow.

"Congratulations! Hmm? This is a cow. Why don't you contract a bull? It should be stronger." Xu Xin observed the cow.

He only gave Li Wenxi one bottle of potion, which means that the cow successfully mutated with just one bottle of potion. It seems that existence like the Silver King, which requires a large amount of potion, is indeed rare.

"I can't afford to mess with a bull. Those horns are pretty scary." Li Wenxi touched the bull's back and spread his hands. "I took advantage of it being alone and attacked it. Cows are good too. Maybe I can get some milk from them later. By the way, is your refrigerator ready?"

Xu Xin told Li Wenxi how he used blue-grade saltpeter to make an ice cellar, and told her to collect more mutant beast meat for storage after the ice cellar was built, otherwise it might be gone in three days.

"Ice cellar? Okay, I'll go try it now!" Li Wenxi was eager to try.

After hanging up the video, Xu Xin looked at the [Explorers] group. Everyone had already bought saltpeter from Li Wenxi and was discussing how to make a refrigerator.

Xu Xin decided to explain to them the matter of the mutant beast meat.

He told them directly and clearly that the mutant beast meat did have the effect of improving strength, but it was relatively weak and required long-term consumption to be effective, so he suggested that they also stock up on more mutant meat.

He didn't tell the group how he knew it, which might be related to his ability.

As for whether these people listen to him or not, that is their business.

After finishing everything, the day is coming to an end.

During the time after coming out of the dungeon, he renovated the tree house, installed a lightning rod, solved the piranha problem, obtained a purple-level suit, explored the giant cave in the center of the lake, and built a plantation on the top floor and an ice cellar on the bottom floor.

He did a lot of things during this night and day, which completely pushed his survival ability to the maximum.

Tomorrow is the new event, Rainy Season. I hope all his efforts will not be in vain.

After washing up, Xu Xin carried Coco to his bedroom, made a basin of ice in the bedroom to cool down, spread his cotton mattress, made a quilt, and lay down comfortably on the bed.

You know, it is much more comfortable to sleep with the air conditioner on and a quilt on than to sleep without a quilt in the hot summer.

I hope tomorrow's activities can be simpler.

After stroking the little guy beside his pillow, he gradually fell asleep.

…

Valley invasion

Xu Xin was awakened by a thunderous sound.

He had never heard such a loud thunder in his life. The huge thunder seemed to explode directly above his head, making him jump out of the bed with a look of surprise and confusion.

"Oh, oh, oh!" Keke was so scared that she jumped up and somersaulted, then climbed onto Xu Xin's shoulder and looked out the window vigilantly.

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