As soon as Zhang Nan heard that Yuan Tiangang and Li Chunfeng were going to ask him questions about chemical equations, he immediately planned to turn around and walk out the door.

Although Zhang Nan is a science student, chemistry is definitely the worst subject he has learned, even worse than his broken English, at least English Zhang Nan also knows an alphabet, and Zhang Nan also knows simple words, but chemistry is different.

Although the equations of chemistry are still spliced together with English letters, it is Zhang Nan who knows them, but the equations do not know Zhang Nan.

As a man who has passed zero eggs in the chemistry exam, Zhang Nan's head is big when he hears chemistry.

"Eh, Qingquan, what are you running?!" As soon as Yuan Tiangang saw that Zhang Nan was about to run, he immediately grabbed Zhang Nan and prevented Zhang Nan from leaving.

After Zhang Nan was pulled, he said with a wry smile: "I said long, you better let me go, I'm really not good at this thing, you say you want any raw materials, I can get it for you, it's this thing, don't pull me to study with you." ”

"Is it that scary?" Yuan Tiangang looked at Zhang Nan's ghostly look, and also asked with a strange expression.

Hearing Yuan Tiangang ask, Zhang Nan nodded sincerely.

"It's okay, but most of the raw materials I have here are almost used, you just happened to come over today, just help me buy a little, by the way, I'm getting a few more sets of equipment, my little Taoist boys are a few people share a set of equipment, it's very inconvenient." Yuan Tiangang saw that Zhang Nan was indeed reluctant, so he said.

"No problem, as long as you don't pull me to ask questions, it's okay to ask for anything." Zhang Nan patted his chest and reassured.

After negotiating this matter, Zhang Nan was relieved to wander around Yuan Tiangang and Li Chunfeng's laboratory.

Looking at the bottles and cans in the laboratory, as well as reagents of different colors, Zhang Nan was also quite emotional, these two veterans can be said to have driven the development of Datang Chemical with their own strength.

"What is this thing?" Zhang Nan picked up a small jar filled with yellow gas on the shelf and shook it.

"Eh, don't shake around, that thing is poisonous!" Yuan Tiangang saw Zhang Nan moving his hands and feet against his test subject, and immediately stopped.

As soon as he heard that it was poisonous, Zhang Nan immediately put down the jar.

"Now you're able to make toxic gases?" Zhang Nan asked with a strange expression.

After hearing this, Yuan Tiangang nodded seriously, and then said: "That's right, Lao Dao makes these things, and they are made in strict accordance with the process in the book, so Lao Dao also knows what the output is, the bottle you are holding in your hand is chlorine, if you break it here, then the three of us will have to explain here." Yuan Tiangang spread his hands and said.

"Chlorine?" When Zhang Nan heard Yuan Tiangang's words, he also knew what this thing was.

A simple chemistry experiment in middle school uses concentrated hydrochloric acid and manganese dioxide to produce chlorine gas. Chlorine is poisonous, and when inhaled into the body, the mild symptoms are laryngitis, bronchitis, or something.

However, if you inhale a large amount of it, it will cause pulmonary edema, making it difficult to breathe, the oxygen content of the blood will decrease, and the extremely high concentration of chlorine can even suffocate people instantly.

"At first, Lao Dao didn't believe that this thing had such great power, so he pulled a few pigs over and tried it, but the pigs were dead anyway." Yuan Tiangang said.

"What about the dead pigs? You're not going to eat it. Zhang Nan looked at Yuan Tiangang and Li Chunfeng with suspicious eyes and said.

After hearing this, Li Chunfeng waved his hand and said, "How is it possible? We buried the dead pigs. ”

"Buried? You won't be buried in that bamboo forest, will you? Zhang Nan suddenly remembered that when he came, he saw the tragic image of the lush bamboo forest, and now there are only bare poles left.

"yes, how do you know?" Yuan Tiangang said strangely.

"How else do I know? You all know that thing is poisonous, why do you bury it in the ground? By the way, did you make a poisonous substance and bury it in the ground? Zhang Nan said.

"Sometimes it pours into the creek." Li Chunfeng immediately added that Yuan Tiangang glared him back at a glance.

"Can you two be a little more environmentally conscious?" Zhang Nan said helplessly.

"Eco-friendly? What is that? The two asked, puzzled.

"It's environmental protection, how can you deal with chemical waste like that? Highly toxic substances are also treated before being buried or discharged. Zhang Nan was also quite helpless.

But helplessly, he can't really hold these two people responsible, comparing them and they don't know what serious consequences will be brought about by the destruction of the environment, and it is also because Zhang Nan did not explain the importance of this matter to the two in advance.

"What should I do with this thing?" Yuan Tiangang asked.

"Dao Chief, what you made yourself, you should know it yourself." Zhang Nan said.

"That's nature."

"Now that you're clear, use other things and the waste you don't use to keep the toxicity to a minimum, and then discharge it into the river." Zhang Nan said.

"Huh? That's a good idea, why haven't I thought of it all along? Yuan Tiangang looked suddenly enlightened.

"By the way, why are you putting so much toxic gas in your lab?" Zhang Nan looked at the three rows of gas cylinders on the shelf and asked strangely.

"I'm wondering if this thing is poisonous, can it be used to kill the enemy? With this thing, it's an invisible weapon to kill people. Yuan Tiangang said.

After hearing this, Zhang Nan rolled his eyes in his heart, and then said silently in his heart: "Yuan Laodao, your thoughts are really advanced, even chemical weapons have been laid out for you." ”

However, Zhang Nan will never put chemical weapons into the battlefield, after all, this thing is too inhumane, although some chemical weapons will not kill, but the damage caused is permanent and cannot be recovered, so Zhang Nan will not use chemical weapons to fight.

"Don't be, you'd better quickly stop this thought, this thing is too dangerous, and it's very cruel, let's study chemistry well, think about how to benefit the people, don't think about killing the enemy." Zhang Nan hurriedly said.

After hearing this, Yuan Tiangang said: "I think so too, I am just afraid that Qingquan you want, so I left so much, leaving so much is to remind you that this thing is too cruel, even if you ask me for it, I will not give it." ”

"That, Chunfeng, after Qingquan is gone, dispose of all these things, do you know?" Yuan Tiangang continued.