According to the information Zhang Heng possessed, the destruction of prehistoric Earth's humanity stemmed from two primary causes.
The first was the rampant outbreak of the apocalyptic virus, and the second was a sudden, massive explosion that occurred between heaven and earth.
These two events led to the extinction of various species on prehistoric Earth.
The apocalyptic virus was irresistible; once a creature was infected, there was no cure, even if a celestial deity descended from the heavens.
However!
He recalled that Daila, infected with a virus from the country of Danwan, had been completely cured by Cheng Xiaofan.
Zhang Heng breathed a sigh of relief.
Yet, as he exhaled, he became anxious again.
Just as Cheng Xiaofan had said, what if someone like Daila, infected with the Danwan virus before its outbreak, showed no symptoms and returned to China?
How many people would be infected!
"Xiaofan, I will report this to higher-ups immediately,"
Zhang Heng said with a grim expression. "We will not rule out any means to identify and quarantine individuals who have recently traveled to Danwan."
"Furthermore—"
He took a deep breath.
"Have you found a cure for the apocalyptic virus?" he asked.
Cheng Xiaofan replied, "No, to completely cure the apocalyptic virus."
"I am still researching it!"
He found it inconvenient to tell Zhang Heng that Jiangzhu Grass could cure the apocalyptic virus.
After all, this type of grass from the moon was extremely limited.
Even if refined into pills, it couldn't be distributed worldwide.
The apocalyptic virus also had different levels.
The virus that Nü Xi was infected with in prehistoric times was top-tier among apocalyptic viruses.
At that time, even Shen Nong the Great couldn't save Nü Xi.
He had no choice but to arrange for Nü Xi to stay in the cave on Yu Pai Mountain, awaiting his successor to appear in the post-apocalyptic era to find a way to save her.
At this moment!
Upon hearing Cheng Xiaofan's words, Zhang Heng's heart plummeted as if it had fallen into an ice cave, and he felt a chill run through his entire body.
Cheng Xiaofan said, "Teacher, please don't worry too much. According to my predictions, the Danwan virus hasn't reached its peak yet."
"The most potent apocalyptic virus has yet to appear."
"If it truly emerges, Danwan will already be extinct."
"The most crucial thing now is to find the source of the virus before it reaches its peak."
"Once the source is cut off, the problem will be much easier to handle!"
Hearing this, Zhang Heng said, "Xiaofan, Teacher wants to ask for your opinion!"
"Can you go to Danwan ahead of schedule?"
Cheng Xiaofan replied, "Teacher, tell me a time."
Zhang Heng said, "Come to my place tonight, and fly to Danwan first thing tomorrow morning."
"I know this is unfair to you, as it means leaving Bai Nü Shen again!"
Cheng Xiaofan said, "How about this, I'll come over first thing tomorrow morning!"
Zhang Heng said, "Xiaofan, it would be best if you could come tonight."
"I'll have Little Teacher Mother prepare a meal for you."
"Teacher is extremely anxious right now."
"Only by seeing you can my heart feel at ease!"
Cheng Xiaofan understood Zhang Heng's anxious mood.
However, he couldn't help but ask, "Teacher, you are the head of the Jianghu Affairs Bureau."
"Why has this matter been pushed onto you by higher-ups?"
"This should be under the purview of the Health Commission!"
Zhang Heng sighed.
He said, "Xiaofan, actually, higher-ups have already realized that the Danwan virus is very peculiar."
"It's no longer something ordinary people can handle."
"That's why this task has been delegated to me."
Cheng Xiaofan fell silent for a moment.
He then said, "Teacher, I promise you, I will come over tonight."
"It might be a bit late when I arrive at your place!"
Hearing this, Zhang Heng smiled, "That's fine, your Little Teacher Mother and I will wait for you!"
After hanging up the phone.
Cheng Xiaofan tilted his head back and drank the golden tea in his cup in one gulp.
It had been a long time since he had entered his space.
With a flash, he entered the space.
At this moment!
Cheng Xiaofan noticed that the Jiangzhu Grass had already proliferated into a large patch within his space.
The red beads growing on them were like countless stars.
Yu Xuanji sat cross-legged by the pond, fishing.
Nü Xi, meanwhile, was lying amongst the Jiangzhu Grass, resting her chin on her hands, inhaling the fragrance emanating from the grass.
"Hello, two beautiful ladies!"
Cheng Xiaofan called out to them from a distance.
Nü Xi and Yu Xuanji spotted Cheng Xiaofan and jumped up in surprise.
"Ah!"
They rushed forward, exclaiming, "Mr. Cheng, you're finally here!"
Cheng Xiaofan chuckled and said, "What's wrong? Looking so ecstatic, you didn't think I'd forget to visit the space, did you?"
Yu Xuanji said, "We haven't seen you for so long."
"Nü Xi and I thought you'd forgotten about us!"
Nü Xi laughed, "Yes, we've missed you so much!"
Cheng Xiaofan said with a smile, "I apologize."
"I've been to a very distant place recently!"
Nü Xi asked, "Mr. Cheng, where did you go?"
Cheng Xiaofan smiled and said, "Nü Xi, do you know that besides the outbreak of the apocalyptic virus in Earth's prehistory, which destroyed many creatures?"
"There was also a great explosion between heaven and earth."
"This caused Earth and the Moon to split into two."
"The other half of Earth and the Moon drifted into another universe!"
"I was searching for that other Earth."
Nü Xi asked curiously, "Did you find it?"
Cheng Xiaofan nodded and said, "I found it, and on another moon, I met a good friend from your youth."
Nü Xi smiled, "You must be talking about Chang'e, right?"
Cheng Xiaofan smiled, "Yes, it was Chang'e."
He pointed to the Jiangzhu Grass, "This Jiangzhu Grass was given to me by Chang'e. I didn't expect it to spread so widely in such a short time."
Nü Xi said, "The fragrance these grasses emit is truly comforting."
Cheng Xiaofan chuckled, "Do you know that Jiangzhu Grass is the best medicinal material for treating the apocalyptic virus?"
"Ah, is that true?"
Nü Xi became excited and said, "Mr. Cheng, does that mean I can be saved?"
Cheng Xiaofan nodded.
He said, "Yes, you can be saved!"
He took out a bag of eggs from his backpack.
"Take a red bead from the Jiangzhu Grass, combine it with an egg."
"Steam it, and eat it three times consecutively."
"It will completely clear the apocalyptic virus from your body!"
Nü Xi was so happy that tears welled up in her eyes.
She said, "This is wonderful!"
"I can finally live!"
Cheng Xiaofan wiped away her tears.
He smiled and said, "This is good news!"
"Don't cry!"
He handed the eggs to Yu Xuanji.
"Xuanji, please handle the matter of stewing the eggs with the red beads from the Jiangzhu Grass!"
Yu Xuanji took the eggs and said with a smile, "Okay, I'll take care of this!"