The Elixir is for You, The Poison is for Me

#777 - I am studying mathematics

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"Well, that guy has been busy with a big project recently. Once he finishes it, he should be back," Lu Jing comforted the village woman.

After speaking, he took out a tael of silver from his pocket as a reward for her giving him the bamboo tube.

Then, Lu Jing returned to the academy with the star chart without stopping.

He wanted to see what exactly Guo Shouhuai was up to.

Learning to observe the stars now was too late, and Lu Jing didn't have the time.

Adhering to the principle of professional problems being solved by professionals, Lu Jing directly took the star chart to Professor Xu's residence.

When Professor Xu was young, he was obsessed with astrology, spending a lot of effort to build an observatory on the top of the mountain, and built a small hut next to the observatory to make it easier for him to watch the stars.

However, as he got older, his legs and feet became less mobile. Considering that he also had to lecture students, the old man obviously couldn't handle running back and forth from the mountain.

So he moved to a small courtyard closer to the school, and only climbed the mountain when he needed to observe the stars. Moreover, he could see general celestial phenomena at his residence, so he didn't need to go to the observatory on the top of the mountain.

Reaching Professor Xu's door, Lu Jing remembered that he seemed to be Guo Shouhuai's teacher.

Then wouldn't the teacher be able to solve the problem set by his disciple?

Lu Jing knocked on the door while thinking.

After a while, Professor Xu's voice came from inside, "Come in."

Lu Jing entered and looked at Professor Xu, and then they both froze.

"Why is it you?"

Professor Xu didn't answer, using a willow branch to separate the two crickets, putting them into their respective cricket jars, and then asked.

"What are you here for?"

"Oh, I have something I want you to take a look at."

Lu Jing didn't know if the old man was really calculating something, or if he was using this to fool him, covering up the fact that he was indulging in useless things.

He didn't dwell on this matter, and took out the star chart from his sleeve.

Professor Xu took it and glanced at it, then couldn't help but start lecturing Lu Jing, "I told you not to listen to my lectures properly, you can't even read a star chart. Don't say you're my student when you go out in the future."

Lu Jing smiled awkwardly.

Professor Xu continued to look down, but let out a soft "Huh," and then asked, "Where did you get this star chart?"

"What's wrong, is it very impressive?"

"No, this is complete nonsense, full of errors. The person who drew this has no common sense," Professor Xu said, casually throwing the star chart on the ground.

"Don't look at it, it's misleading."

"Ha? But this thing was given to me by Guo Shaojian."

Professor Xu was stunned again when he heard this, "Guo Shouhuai gave it to you? When?"

"Today... well, more precisely, yesterday. He left this thing to his lover's sister, asking her to give it to me," Lu Jing said.

"You should have said so earlier."

Professor Xu bent down and reached for the star chart on the ground again.

Seeing that the old man was having a little trouble, Lu Jing quickly helped him pick up the star chart and handed it over, "Didn't you say this thing is nonsense and misleading? Why are you picking it up."

Professor Xu took the star chart, shook off the dust on it, and then said, "Under normal circumstances, a star chart drawn like this is indeed nonsense, but there is another possibility."

"What possibility?"

"This chart was drawn a long time ago."

"How long ago?"

"I don't know, I haven't calculated it in detail, but tens of thousands of years is always there," Professor Xu said, "Many people don't know that the stars above our heads are not static, they are constantly changing their positions, especially as time goes by, many stars have shifted a lot compared to before.

"This is also why I said at the beginning that this star chart is nonsense, because from our current perspective, this star chart can indeed be described as completely wrong. But if it is placed tens of thousands of years ago, it makes sense."

Lu Jing could still understand this part of the junior high school geography content, so he asked, "Is that so, then what does this tens of thousands of years old star chart mean?"

"How would I know what a tens of thousands of years old star chart means." Then Professor Xu added, "I need to spend some time to determine the time first, and then deduce the trajectory of those stars' changes, so that I can unlock the secret behind this star chart."

"How long will that take?"

"At least a month, maybe longer."

"It's early March now. A month later, on the fourth day of April, all twelve teams should have arrived at the center of the secret realm. That's too late. Even if we figure something out, it's useless."

"Then you do it yourself?" Professor Xu glanced at Lu Jing.

"I'm not complaining that you're calculating slowly," Lu Jing said quickly, "I suspect that Guo Shaojian knew that I would find him to question him about the selection of his team members, so he deliberately gave me a randomly drawn star chart, the purpose of which is to delay me."

"Shouhuai is not that kind of person," Professor Xu shook his head, "Although he can be bad sometimes, he never jokes about official business. Hmm, I don't know where he got this star chart from. He never mentioned it to me before."

"Has he come to you recently?"

"No."

"Okay." Lu Jing sighed, "Then I'll just wait and see for now. By the way, Professor Xu... have you calculated anything recently?"

"Calculated what?"

"This trip to the secret realm, will it be smooth? Will the secret power of this world recover? The things locked inside..."

"I didn't calculate it." Professor Xu interrupted Lu Jing, "I've been obsessed with fighting crickets recently, you've seen it."

"But you just told me that you fight crickets to study mathematics."

"That was to deceive you. When have you ever seen anyone use crickets to tell fortunes."

"..."

"Okay, go find something else to do. Don't delay me from studying this star chart here. When I figure it out, I will naturally tell you."

Professor Xu began to chase people away.

Lu Jing was also very sensible when he heard this, and stood up to return to his small courtyard to continue practicing his sword.

And when he finished practicing his sword, he saw Xia Huai already standing in his courtyard.

"The matter you asked me to investigate last time has some clues. There is indeed a Taida Qianzhuang in Mei Prefecture, but as the four major Qianzhuang began to exert their strength in Mei Prefecture, about ten years ago, that small Qianzhuang could no longer continue."

"Then is it gone now?" Lu Jing frowned.

"Taida Qianzhuang is indeed gone now, but it hasn't disappeared. It was acquired by Tongbao Qianzhuang and is now a branch of Tongbao Qianzhuang in Mei Prefecture," Xia Huai said.

Lu Jing's spirits lifted slightly when he heard this. It seemed that the true explanation of the Hundred and Eight Mad Demon Staffs was within reach.

Guo Shouhuai's trip to the secret realm didn't seem to include him, and Professor Xu couldn't figure out the star chart for a while, so he could just take advantage of this gap to take a trip to Mei Prefecture.

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