"The gravity is 1.3g, which is smaller than the last space rift." Fang Yuan felt the change in gravity and reported the approximate value of gravity.

"I'll just say how do you feel that the shield is so much heavier, but why is the gravity so much worse?" Niu Dazhi scratched his head and couldn't understand the reason.

Han Youwei helped to solve the puzzle: "On the surface of the planet, the closer to the center of the earth, the greater the gravity; However, inside the planet's crust, the closer you get to the center of the earth, the smaller the gravity. In other words, the location we entered this time was closer to the center of the Star Beast World. ”

The team of five people continued to walk forward, and all they saw along the way were craggy and strange blue crystal caves.

Beef Balls picked and picked crystals along the way, and said: "I didn't have time to bring these gems back last time, I must bring a few pieces back this time, it must be very valuable." ”

"It's worth a ghost, more than a dozen yuan a piece." Eve rolled her eyes.

"No, how can it be so cheap? This is something in the spatial rift, how many people dare to come and get it? "Beef balls don't believe it.

"How expensive do you think silica is?" Eve continued to roll her eyes.

"What is silica? It sounds familiar. Beef Maruk asked.

"Taught by a junior high school chemistry physical education teacher." Eve laughed uncontrollably and took pleasure in squeezing beef balls all day long.

"Fang Yuan, what the hell is silica?" Beef Balls was a little angry, and turned his head to ask Fang Yuan.

"I'm really convinced of you, how did you get into No. 1 High School?"

Fang Yuan was a little speechless, but he still answered his question: "It's crystal, it's really worthless." Pick up a piece and go back, and you can probably exchange it for a bowl of beef noodles...... Right? ”

As soon as the beef balls heard that it was a crystal, they immediately threw away the crystal in their hand: "Don't do it, it's a bargain all over the world!" ”

He turned his attention away from the crystal and asked again, "Why is there so much silica in the Star Beast World?" And there is not even oxygen, doesn't the star beast need to breathe? ”

"Category A Star Beasts are not the same thing as you, and of course your carbon-based life won't understand." Eve began to tease him again.

Beef Balls said with a straight face: "Can you say something that people can understand?" What is carbon-based life? ”

"I have many secrets, and I won't tell you, I won't tell you......" Eve sang.

The beef balls looked sullen.

Han Youwei saw that they were about to fight, and said, "Eve, don't scare him." Let's tell him the answer. ”

"You say, I don't want to explain this common sense problem." Eve pouted.

Han Youwei had no choice but to explain: "Okay. Carbon-based life is carbon-based organisms. We humans are carbon-based life, and the proteins and other substances in the body are based on carbon and composed of nitrogen, hydrogen, and oxygen......

"But the Star Beast is different, there are many silicon elements in the Star Beast World, and the creatures that appear in the Star Beast World are all silicon-based life.

"Moreover, carbon and silicon are adjacent to each other on the periodic table, and their chemical properties are relatively similar. If all the carbon in our human protein is replaced with silicon, then we will become a silicon-based life. ”

Speaking of this, Han Youwei paused, and then added: "However, only Class A Star Beasts are silicon-based lifeforms, and Class B Star Beasts absorb the genes of some Earth creatures, and all of them are partially carbon-based. ”

After listening to this, Beef Balls suddenly realized: "I understand this way, that is, the chemical elements of the star beast's body are different from ours." ”

Eve covered her forehead and commented, "It's really a fool's understanding, and it's quite thorough." ”

"Captain, we need to keep an eye on the time, we must go back before the oxygen tank runs out. And after coming in for so long, I didn't see the star beast, and I didn't see the corpse of the star beast, could it be that I went in the wrong direction? Ye Zhiyu reminded.

Fang Yuan looked at the time and said, "Come in for almost 30 minutes, explore for another 30 minutes, and then turn around." ”

The team of five continued to move forward.

After a few minutes, Fang Yuan stopped and looked up.

"What's wrong?"

"We seem to have returned to square one, this place seems to have passed before." Fang Yuan wasn't very sure, because the crystal caves all looked similar.

"Everywhere in this place is the same, are you sure?" Beef Maruki didn't remember walking through this place at all, or he felt exactly the same everywhere he walked.

Eve swiped with the tablet and said, "We are indeed going in circles, and the road we have just walked is turning to the right as a whole, and it is indeed possible to return to the original point." ”

Han Youwei walked to a crystal cluster to check it and said, "There are indeed marks, we walked here before." ”

Eve began to calculate and draw on the tablet, and soon came to the conclusion: "At the speed of our movement, we are probably going around a circle with a circumference of 8 kilometers." It's probably this bottomless abyss on our right. ”

She said, pointing to the bottomless abyss on her right.

The cave in which the five members of the team are now is very special.

The whole cave is a circle with a circumference of eight kilometers, with the walls of the cave on the left and a bottomless abyss on the right.

Use the ghostly eye to probe the bottomless abyss, and you can't see the bottom at all.

However, you can see the edge of the bottomless abyss, and there is a circle of ** open caves, like rings, set on the bottomless abyss.

The cave where the team of five people is located is one of the circles.

"Why don't you want to see the next layer of the cave?" Fang Yuan asked everyone's opinions.

"If you fall into the bottomless abyss, you can't be saved." Ye Zheyu is more cautious.

"They all came in, but they didn't find anything, so it's not interesting to go back like this. I'm in favor of going down and seeing. Eve raised her hand to speak.

After the five of them deliberated, they finally decided to continue exploring the next layer of the cave.

So, Fang Yuan made an iron chain, tied it to a crystal cluster, and lowered it down the bottomless abyss.

The five of them buckled the buckles of their combat uniforms to the iron chain and slid down the chain.

After descending fifteen meters, enter the next level of cave.

The team of five continued to explore.

Finally found a star beast lair.

These Star Beasts were only level 6 or 7, so Fang Yuan decisively launched an attack and destroyed this Star Beast Lair.

In the lair of the star beast, Eve found a small pinch of pale blue powder, carefully packed it in a small glass bottle, and her face was full of excitement.

Beef Balls leaned in, wanting to see what she was doing.

"You go away, one milligram less, and you'll be slaughtered." Eve threatened.

"What's that?"

"Star Source Mine."

The five people gathered around, looked at the light blue crystal powder the size of a thumb cap in the glass bottle, and wondered, "This is the Star Source Mine?" ”

"Isn't the ore supposed to be in pieces?" Beef balls scratch the head.

"This is the Star Source Mine, collected by the Rift Star Beast, just like that, it is priceless." Eve explained.