saturation concentration

Sui Cannong's heart skipped a beat.

No, wait a minute, what do you mean "you probably won't need it in the future"?Does anyone really talk like that?Sui Cannong felt that the temperature of his hands and feet began to drop suddenly, and he couldn't analyze the logic of this sentence at all for a while.

How could it be possible that "he won't need it in the future", is it because he really doesn't need it, or because...he thinks he won't have a future at all?

It may be because Sui Cannong was silent for too long, Ji Ling on the other end of the screen seemed a little dazed, and he called out with some hesitation: "Teacher Sui?"

Sui Cannong responded in a panic.

He knew he couldn't push it any further this time, so he clicked the confirm button to accept the ore, and said "thank you" in a hoarse voice.

Ji Ling just said, "You're welcome."

After seeing Sui Cannong accept the ore, Ji Ling seemed to feel much more at ease.

He didn't say much, just manipulated the little butterfly, and continued to cut down trees quietly in Sui Cannong's home, as if he didn't intend to explain more about what he just said.

The ore in the backpack was like a mountain of explosives that was about to be ignited, and Sui Cannong was on pins and needles.

"Mr. Ji, you, you make me feel embarrassed." Sui Cannong considered his own words, and asked, "You, do you have any troubles in reality? Or... Is there anything I would like to ask you?" Where can I help?"

Sui Cannong paused when he saw Ji Ling's character chopping down trees.

However, Ji Ling's answer was the same as last time, he said: "No."

Sui Cannong couldn't believe it this time.

But he also realized that if he continued to ask this question, it seemed that the intention in the words was a bit too obvious.

So Sui Cannong pondered for a while, and then said: "Actually... everyone should be a little bit troubled, such as me, I actually have a lot of troubles these days."

Sui Cannong saw that Ji Ling's tree-cutting action seemed to have slowed down, and he asked, "What's wrong?"

"For example...the science fair topics for three of my classes haven't been decided yet." Sui Cannong sighed, "The tenth graders are the most difficult. They want to do topics related to hatching eggs, and I didn’t want to make eggs yet, so I studied a class with Sui Yingjun in my arms, thinking about how to make it lay eggs.”

"The problem is that Sui Yingjun belongs to the public, and I just raised him, but I can't tell them that I can't do this project." Sui Cannong paused, then added belatedly, "Oh yes Yes, Sui Yingjun was raised by me—”

"Turtle." Ji Ling's voice came from the phone, "You told me."

Sui Cannong was stunned for a moment, and then he recalled that he seemed to mention it when he was in the coffee shop, but he didn't expect Ji Ling to actually remember it.

"I understand." He heard Ji Ling say, "Children don't think about the feasibility of the project first, but we can't directly deny their ideas."

These words really touched Sui Cannong's heart.

It may be that it is rare to meet such a good listener. For some reason, Sui Cannong felt really sad as he talked.

"And tomorrow, the two classes of Robert and I will combine together for an experiment." Sui Cannong said, "As a result, Robert suddenly has to go for a physical examination tomorrow, and I am the only one watching over 40 people. I still have a few children that I can’t name.”

"It's not that I'm afraid of trouble or something, but I'm afraid that I won't be able to take care of some children." Sui Cannong said.

He also began to slash at the oak tree in front of him, and said: "I usually can't take care of the experiment when I lead a class. If some children do the experiment confusedly tomorrow, then such a good opportunity will be wasted." Yet……"

Ji Ling was quiet for a while, and asked, "Can't we postpone it?"

"It is possible, but if it is delayed, it will be moved to next week." Sui Cannong sighed, "They started asking me a week ago when I could do the experiment, and the children have been looking forward to it for several days. , come to the classroom every day to help me water the flowers and feed the fish.”

After Sui Cannong finished speaking, he felt a little embarrassed.

His original purpose was to use himself as a simple example to get out what Ji Ling was thinking, but he didn't expect that he would really pour bitterness on him while he was talking.

"Hey, it's actually a trivial matter, but it's nothing." Sui Cannong was a little embarrassed, "So what about you, you—"

"Teacher Sui." Ji Ling interrupted him suddenly.

Sui Cannong was stunned for a moment, and then responded.

He saw Ji Ling's game character suddenly stop cutting trees, and then stood motionless in place.

"Actually, I don't have class for the first period tomorrow morning." Ji Ling said.

Sui Cannong: "Yeah."

Ji Ling: "...There is no class in the second period."

Sui Cannong: "Yeah."

Ji Ling didn't speak any more, just paused for a moment, and then hummed lightly.

Sui Cannong suddenly realized: "...Huh?"

It's sort of putting the cart before the horse.Sui Cannong thought.

Seeing Ji Ling standing at the door of the biology classroom, Sui Cannong felt that he was in a trance for a moment.He was thinking about how he got to this point yesterday, why Ji Ling didn't get a word out of his heart, and instead pulled him over to work as his helper.

Ji Ling was staring at the plants on the windowsill in a daze.

He gives people the impression of tranquility and silence, and Sui Cannong feels that Ji Ling is like a slow-growing green plant, as if it can only absorb a small part of the specific wavelength of light on the spectrum.

Sui Cannong called out: "Teacher Ji."

"Good morning," he said, "I am sorry to trouble you."

Ji Ling turned to look at him, shook her head, and said, "No."

For the students, the experimental class is a game paradise, but for the teacher himself, it can be regarded as a purgatory on earth.

Sui Cannong organized students from two classes into the laboratory next to the classroom, and divided them into groups.There was a lot of noise in the laboratory, he turned his head and saw Ji Ling lowered his head, arranging his lab coat.

His hair is very soft, I don't know if it's because of the white fabric or the indoor lighting, Sui Cannong feels that the skin on the back of his neck looks very white.

Sui Cannong came back to his senses, paused, and began to tell the students in the class to quiet down.

The experiment is very simple. It is a small popular science experiment to observe the discoloration phenomenon by using purple cabbage as an acid-base indicator.

Although the steps are not difficult, there is a step in the middle where purple cabbage needs to be boiled in boiling water. There is a fire source and boiling water, so Sui Cannong dare not take it lightly.

Sui Cannong pointed out several boys to Ji Ling.

"These are the key observation objects, a proper nightmare level." Sui Cannong said, "The range of activities is relatively wide, and I like to wander around those girls. I don't know what they are thinking about, but basically every day They were the ones who got into trouble this time, please help me to watch more."

Ji Ling nodded and said, "No trouble."

The two of them are in charge of the students in half of the classroom, and the overall efficiency is much higher.

After 10 minutes, the boiled purple cabbage exudes the unique sweet aroma of vegetables, and most of the group's experiments are on the right track.

Sui Cannong finally breathed a sigh of relief.

He smiled and said to Ji Ling: "Don't tell me, it smells pretty good."

Ji Ling looked at Sui Cannong's face and didn't speak for a long time.

After a while, Sui Cannong saw that he looked away stiffly, and after a while of silence, he said, "Well, it smells like hot pot."

It was an interesting description, Sui Cannong listened to it, and he said it was true.

However, Sui Cannong's prediction will never go wrong.

Five minutes later, the three boys aggressively held a handful of purple cabbage leaves and stood in front of Sui Cannong to start the first round of negotiations: "Mr. A crack."

The leading blond boy said angrily: "And why can Lisa and her group get three big leaves, while we all get small and withered leaves?"

Teenagers' desire to win and compete will always be reflected in very inexplicable places.Sui Cannong had a splitting headache.

Although the cracks on the vegetables would not affect the results of the experiment at all, he took a look at the vegetable leaves in the boy's hand and found that they were indeed not very fresh.

Sui Cannong recalled that there should be a small half of the purple cabbage left, and it was placed in the next classroom. Maybe some other group will need some later.

"Stop it." Sui Cannong said, "Focus on your own experiment, you guys heat up the water first, I'll go get some more purple cabbage now."

Before Sui Cannong left the laboratory, he saw Ji Ling walking to the experimental table of a group of girls.He pointed to a girl's loose mid-length hair, and was signaling her to tie it up with a rubber band.

With Ji Ling helping to watch, Sui Cannong felt relieved and went next door to find the remaining half of purple cabbage.

Sui Cannong thought about it, and decided to help them cut into equal parts in advance, so as not to cause troubles due to the size problem later.

Two minutes later, he suddenly heard a clear sound from the next door, as if something had been smashed.

Sui Can's heart is like still water.

He was used to it a long time ago, but he quickly turned around and walked towards the laboratory, feeling like a lotus blooming peacefully on the lake.

In each experimental class, at least one or two beaker test tubes must be buried, which is normal and inevitable.Under normal circumstances, students who cause trouble will fool around with a playful smile.

However, when Sui Cannong returned to the laboratory with the chopped purple cabbage, he found that the air was eerily quiet.

Sui Cannong suddenly had a very ominous premonition.

He first saw a broken beaker in the center of the laboratory, water on the ground, and a circle of stunned students.

Sui Cannong felt something was wrong, and asked the people beside him, "What's wrong?"

"That beaker suddenly exploded just now." The female student said tremblingly, "It's Martin's group, they forgot to install the asbestos net."

Sui Cannong raised his eyes, and he saw that Ji Ling was standing very close to the exploded beaker.

Ji Ling was blocking a few female students behind her in a protective posture. She should have stood in front of them the moment the beaker exploded.

"Mr. Ji, your hand..." Another girl spoke in a voice that was like a thread.

It was only then that Sui Cannong noticed that Ji Ling's cuffs were slightly rolled up, probably because he was helping the students before.

His wrist was thin and slender, but at this moment, bright red blood snaked down his forearm and dripped onto the white laboratory table.

Ji Ling seemed to be taken aback for a moment, but he didn't say anything, just turned his wrist slowly, and then found a scratch on his forearm.

Sui Cannong saw that Ji Ling lowered his eyes, staring dully at the blood dripping from the wound in a daze.

Then he raised his head and saw Sui Cannong standing at the door.

I don't know if it's an illusion, but at the moment when the eyes of the two met, Sui Cannong felt that Ji Ling's eyes seemed to have a trace of imperceptible panic.

——Then Sui Cannong saw Ji Ling take a small step back, and subconsciously shrank the injured hand back.