"Let's go now."

Xu Xin looked out the window in the direction where Lou Feier and Keke left, but there was no one in sight.

On the map, the green light dot representing Lou Feier was already outside the Crystal City and was not moving much in an area.

It seemed that it would take some time for her to come back, so Xu Xin no longer waited for her and prepared to take Shi Wanyun to the crystal house, which was only ten buildings away from the Crystal Palace, to inject her with the medicine.

Of course, Zeng Tao, Mimi, and Yin Wang also went with him.

Zeng Tao was very cautious. The moment Shi Wanyun got out of bed, she immediately grabbed Shi Wanyun's wrist tightly to prevent her from running away.

"...You don't have to be so careful. There's no way I'm going to run away." Shi Wanyun frowned slightly, "Be gentle..."

"Humph, you just said that! I won't be fooled again!"

"That was a special situation just now..."

After getting down from the tree house, they only took a few steps and arrived in front of the crystal building.

Seeing the crystal building, Zeng Tao said sourly, "Humph, I haven't even injected the medicine yet, you're really getting a bargain."

She looked at Xu Xin eagerly and said, "There should be a share for me, right?"

"Of course I have." Xu Xin smiled helplessly, "Once this crisis is over, I will immediately inject you with the medicine."

"It's a deal!"

Xu Xin stretched out his hand and pushed the crystal door. Just like before, this crystal door that no one else could push open did not require him to exert any force. It was as if it had authenticated his genes. The light flickered slightly and then opened by itself.

Xu Xin walked in immediately, Zeng Tao pulled Shi Wanyun in as well, and Mimi lay down at the door and stood guard.

There were four ordinary survivors around this crystal building. Seeing what Xu Xin and his companions were doing, they all looked over here with some curiosity.

"Did you see that?"

"I seemed to see Brother Xin walk into that room with two girls?"

"Damn, Brother Xin really knows how to enjoy himself, doing that kind of thing in the crystal house..."

"Ah, Brother Xin is actually such a person...Do I have a chance too?"

Several people walked closer and closer, wanting to come over and find out what was going on to satisfy their curiosity.

Mimi, who was guarding the door, suddenly stood up and opened her mouth wide and roared at the few people!

"Wow, it's Brother Xin's cheetah Mimi!"

"For such a big guy, his voice is so cute!"

"Don't be fooled by the cute voice, I'll slap your head off with one slap!"

"It doesn't seem to let us get close..."

"That's bullshit! Do you let anyone get close to you when you're doing that?"

"Then let's get going quickly. However, does this count as having obtained exclusive information?"

"Go, go! I want to tell everyone about this anonymously!"

Xu Xin in the room heard the noise outside, but without hearing amplification, he didn't hear it clearly.

He was now holding a small bottle of medicine and standing next to the injection device, while Zeng Tao had already grabbed Shi Wanyun's arm and put it into the injection device.

Shi Wanyun did not resist at all, and there was even a faint glint in her eyes.

"I don't know if this potion is effective..." She was also panicking at this moment.

From her perspective, this potion was obviously very useful to Lou Feier, but...

If it doesn't work and her identity is exposed again, she's basically done for.

If it's useless, she still can't resist those monsters, and Xu Xin won't be able to tolerate her.

If it really comes to that...

Shi Wanyun bit her lip.

If it really came to that, she would tell Xu Xin the truth before she died. She was still a human being after all. Although her actions might cause those monsters to kill many survivors, but...

Thinking of this Crystal City and the World Tree...

At least Xu Xin should be fine.

The other survivors were a motley crowd, and even if they survived temporarily, it would be meaningless. It would be better to use their lives to help Xu Xin and his group.

Xu Xin and his companions are the hope of humanity!

With this resolute mood, her arm suddenly felt a sharp pain as if it had been pierced.

"Hmm..." She groaned at the sudden pain.

Then she felt a warm current flowing from her arms to all parts of her body.

The heat flow was so strong that it made her skin all over her body turn a faint red.

Xu Xin looked at her reaction and nodded.

Her reaction was basically the same as Lou Feier's at that time.

So, the success rate might be very high.

"Wow... her wrist is so hot!" Zeng Tao exclaimed in surprise, "It feels like it's definitely over 40 degrees Celsius! An extremely high fever!"

Shi Wanyun felt very uncomfortable.

But she still cheered herself up and felt the changes in herself.

Then, her eyes slowly opened wide.

"Ha ha……"

The corners of her mouth curled up slightly, and although she was still breathing hotly, it was obvious that she was very surprised and in a good mood!

She raised the hand that was not held by Zeng Tao and grabbed Xu Xin's arm. She staggered forward and almost fell into Xu Xin's arms.

Xu Xin was still wary of her at this time, and immediately supported her to prevent her from getting too close. At the same time, Zeng Tao also pulled her away with force, and asked warily: "What do you want to do?!"

"I..." Shi Wanyun was almost pulled to the ground by Zeng Tao, but fortunately Zeng Tao pulled her up immediately.

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