The spiritual energy spread out. Fortunately, after Yu Fei advanced to Dragon Ball, the quantity and quality of the spiritual energy he could control had greatly increased, so he could support such an investigation.

Five meters above the ground, Yu Fei spread the spiritual energy out. After feeling it carefully, he still found no abnormality. He took a deep breath and increased the depth of exploration, and the spiritual energy spread to ten meters below the ground.

However, in such a large area, Yu Fei had to control so much spiritual energy, and his brain had to process massive amounts of information all the time. Even he found it a little difficult to support him. Sweat began to form on his forehead, and it gradually gathered along his cheeks and down to his chin.

Up, drop by drop falls.

Xu Guangqi was shocked when he saw Yu Fei soaked with sweat. He finally believed that Yu Fei was really using something that he couldn't understand. Otherwise, how could ordinary people act?

I can't even sweat like rain.

The spiritual energy spread away bit by bit. The closer it got to ten meters, the more tired Yu Fei felt. Every moment, he spent a lot of energy to control the spiritual energy and analyze the information transmitted back by the spiritual energy.

Just when Yu Fei felt that he could no longer hold on and wanted to give up, a strange feeling suddenly appeared, and multiple places appeared at the same time, as if he could see incredible things as long as he persisted.

Yu Fei bit the tip of his tongue, used the severe pain to regain some clarity, and controlled his spiritual energy to go to the place where the strange feeling appeared.

Yu Fei finally 'saw' the place that gave him the strange feeling, but what he 'saw' made him stunned. It was not jade jewelry or ancient relics, but actually something like branches.

At this moment, Yu Fei finally reached his limit, his body swayed, and he fell to the ground. He was too weak to speak, but he still had a surprised smile on his face.

"Yu Fei! Yu Fei! Are you okay?"

Xu Guangqi rushed over, helped Yu Fei up, and asked in panic. He didn't know what Yu Fei was doing, but he could see that Yu Fei's wear and tear was serious.

"Help me sit up!"

Yu Fei used his last strength to whisper. Xu Guangqi hurriedly helped Yu Fei up, using his own body to support Yu Fei, otherwise Yu Fei would fall down even if he sat up.

Yu Fei hurriedly used the internal strength training method that Scar taught him. This is the only method found so far that can speed up the recovery of spiritual energy and his own spirit.

Just when Yu Fei started practicing, Xu Guangqi discovered that the weeds in all directions began to grow wildly. The weeds that had fallen down gradually stood upright, and many dead grasses began to sprout. Everything seemed like a miracle.

After a while, the two of them were surrounded by grass growing up from all directions. This was because Yu Fei couldn't hold on anymore in the end and couldn't control the released spiritual energy. The spiritual energy was left in the land and the grass and trees growing here.

, of course began to absorb and grow crazily.

Xu Guangqi looked around in horror. If Yu Fei hadn't been left unattended here, he would have been scared away. He had never seen such a weird scene.

More than half an hour later, Yu Fei slowly opened his eyes. He had recovered most of his recovery, and the rest could be recovered slowly.

"Yu Fei, you finally woke up!"

Seeing Yu Fei open his eyes, Xu Guangqi hurriedly said that the surrounding grass had grown as tall as an adult, and the two of them had been submerged by the grass.

"this……"

Yu Fei saw the weeds around him and immediately understood why this was happening. He couldn't help but smile bitterly. He was still careless.

He glanced at Xu Guangqi and found that Xu Guangqi was just shocked and scared. He sighed softly. If there was a stranger next to him, Yu Fei might have killed someone and silenced him. If such weird things were spread, he might not know

I'm going to be a guinea pig.

"Only the two of us know what happened today! Don't let the third person know!"

Yu Fei turned to Xu Guangqi and said very seriously, looking directly at Xu Guangqi.

"This...I...but..."

Xu Guangqi was a little hesitant. The wild growth of vegetation without any reason was indeed quite attractive to him as a professor of botany. He even thought of conducting research based on this, but unexpectedly Yu Fei asked him to keep it secret.

"Once word of this gets out, it will only cause death for you, without any benefit."

Yu Fei said seriously that if Xu Guangqi insisted on keeping it secret, he might have to do something to feel sorry for him.

"Well, I promise you, but can you tell me why?"

Seeing Yu Fei's serious look, Xu Guangqi finally gritted his teeth and nodded. However, he could tell that Yu Fei knew why and couldn't help but be curious.

"Knowing too much is not good for you. You should just pretend that nothing happened. I have found the cause of the orchid mutation. Let's get down to business!"

Yu Fei shook his head. When something like this happened, he couldn't find a reason to fool Xu Guangqi, so he simply stopped talking and changed the topic.

"Oh...ah! Did you find it?"

Xu Guangqi was a little disappointed. After a moment, he suddenly realized that Yu Fei had actually found the reason through the Great Dance.

"Well, get ready to work."

Yu Fei nodded. He had already noted down several places where abnormalities were found. Now the two of them no longer have to be like headless flies and can dig with a target.

"good!"

Xu Guangqi nodded excitedly. His thoughts have gradually changed. He is no longer the nerd and research madman he was before, but wants real benefits.

Yu Fei took him to the nearest location first. From here, he could dig down eight meters to dig out the thing.

Yu Fei looked at Xu Guangqi's weak and skinny body as a result of working in the laboratory all day, and simply stopped counting on him and started doing it himself.

Not to mention this physical work, in front of Yu Fei, it really didn't count. He rounded the shovel in his hand and began to work at a fast speed. Every time he went down, a large piece of soil was thrown out.

Xu Guangqi, on the other hand, was miserable. Ten minutes of work was not as efficient as Yu Fei's one minute of work.

Soon a big pit was dug, and Yu Fei asked Xu Guangqi to stand on it and help him dig away the soil thrown up.

Yu Fei stood at the bottom of the pit, with his hands rounded, and shovelfuls of soil thrown up from his head.

There are also things to pay attention to when digging a hole. People who can dig can dig straight down, which saves a lot of wasted effort. People who can't dig will dig a semi-circular hole, which is a lot of work.

.

Compared with machines, the weakness of human beings is their low strength, and their advantage is that they are not as flexible as machines. Yu Fei does not have the problem of weak strength. He can pick up things weighing five to six hundred kilograms, so when he really works, his efficiency is

horrifying.

Yu Fei threw soil up from the bottom of the pit, which required several times the strength of Xu Guangqi above, but Xu Guangqi was still sweating profusely and couldn't keep up with Yu Fei's rhythm. Xu Guangqi kept lamenting that Yu Fei was a pervert.

Yu Fei dug a hole with a diameter of more than two meters all the way down to a depth of five meters. Because Xu Guangqi, his partner, was not strong enough, he could not clear out the accumulated soil, and the soil Yu Fei threw up would fall down again.

He just stopped, lit a cigarette, and gave Xu Guangqi some time.

"You should try harder, but if it doesn't work, I'll go back tonight and prepare some tonic for you."

Yu Fei stood at the bottom of the pit and shouted loudly.

"You're a young man, your back hurts when you stand and talk. I'm a normal person and you're a pervert. Can I compare with you?"

Xu Guangqi stuck his head out from above and said to Yu Fei below.

"You dare to call me a pervert. Believe it or not, I will finish digging the hole in a while, drop you down and bury you. Most people can't find such a deep corpse pit."

Yu Fei blew out a puff of smoke, looked sideways at Xu Guangqi above, and said with a wicked smile.

"You are cruel!"

Xu Guangqi didn't dare to reply.

After resting for a while, he continued to work, but the soil became harder as he went down. Yu Fei's speed finally slowed down a bit, and Xu Guangqi felt a little more relaxed. Finally, as it got dark, Yu Fei dug to a depth of eight meters.

He slowly dug out the surrounding layers, pierced the bottom of the mysterious 'dead branch' with the shovel, and shoveled up the soil surrounding the 'dead branch' with fierce force.

"Okay!"

Yu Fei shouted, Xu Guangqi hurriedly gathered himself, Yu Fei hugged the big clod of soil and threw it upwards.

Xu Guangqi saw a clod of soil flying up and hurriedly reached out to catch it.

"Fuck..."

Just as Yu Fei threw the soil up, he saw darkness above the cave entrance. He hurriedly hid aside, thought for a moment, and stood still.

Because of Xu Guangqi's small body, when he caught the clod, he lost his balance and fell down while holding the clod.

In Yu Fei's heart, there were ten thousand grass-mud horses running past, but he couldn't get out of the way. If Xu Guangqi was allowed to fall, he would probably have to buy him a coffin.

Plop...

Xu Guangqi hit Yu Fei, who stretched out his arms to catch him, and smashed him into pieces. Fortunately, Yu Fei was strong enough to cushion him. Xu Guangqi felt as if he had fallen.

"Bah, what use do I have for a waste like you!"

Yu Fei got up, spat out the dirt he had chewed in his mouth, pointed at Xu Guangqi and said angrily, this guy is just a pig teammate.

"Excuse me!"

Xu Guangqi laughed awkwardly. Seeing Yu Fei's face covered with dirt, he was having a hard time suppressing his laughter at the moment.

"Your sister!"

Yu Fei wanted to beat Ya up, but felt that his small body could not bear his slap, so he simply gave up.

"Hey, where are the things you dug out?"

Xu Guangqi then touched his head and asked doubtfully.

The two of them looked around hurriedly, and it was clear that Xu Guangqi had fallen down while holding the clod in his arms, but now he had disappeared.

"Stand up!"

Yu Fei's eyes finally rested on Xu Guangqi's buttocks, and he gritted his teeth and said a few words.

Xu Guangqi hurriedly got up, and a butt mark appeared under his buttocks. It was obvious that he was sitting on a clod of soil.

Yu Fei hurriedly squatted down and dug, and soon a branch was exposed, and then a gray-black branch as long as the middle finger and as thick as a thumb was dug out.

Yu Fei hurriedly picked it up, and it seemed that it was really a branch, but he couldn't tell what kind it was, and it seemed to be old. I don't know why it didn't rot, but it was preserved.

"We dug for a long time and dug out a branch?"

Xu Guangqi asked with his eyes widened in disbelief.

"Then what do you want to dig out?"

Yu Fei raised his head and asked.

"I don't know either."

Xu Guangqi spread his hands. He couldn't bear to dig out a branch anyway. In his opinion, such a thing was just a fossil at best and of little value.

Yu Fei put the branch into his pocket, looked at the eight-meter-deep vertical hole, turned to Xu Guangqi and asked: "How do you think the two of us should get out?"

"Forehead."
Chapter completed!