Duanmu yawang also felt a little strange. He frowned slightly and looked at mu Qingchen for a long time before he replied: "it's very front content. Everyone was stunned when they heard it.

The drug refining book they learned is five or six hundred pages, and the content is very rich. A book can be learned for several years, and more than ten or twenty chapters are actually equivalent to introductory things!

People thought it was untrustworthy and quickly turned to the book. When they did, they really saw a paragraph about some methods of combining and refining similar substances, and couldn't help staring at them: "this, how is this possible?"

What they have already learned, they don't even know. Duanmu yawang, a waste, came to class on the first day today, but she can easily tell the contents of the book!

This, this is incredible!

"I believe everyone has seen the contents of the book." Mu Qingchen said faintly: "from everyone's expression, I see that everyone seems to be shocked by this matter. I'm thinking, how did you learn the contents in front of you? How much did you master? Why did no one remember such an important refining method?"

The crowd was silent and speechless.

"I don't want to say too much, but if you can't do something yourself, don't think others can't do it." Mu Qingchen's voice is very indifferent even if he teaches others a lesson: "Why can you doubt others so justly? The world is far bigger than you think. Many things you think are impossible and take for granted are actually due to your narrow vision and narrow mind. In the future, when you grow up and have more knowledge, you will know how ridiculous your thoughts are sometimes."

After talking, he didn't give those people a chance to speak, and looked at the people calmly: "You are now the age when you can learn things well. You should put your mind right. Don't be affected by some immoral atmosphere. You always talk about some things that don't exist. You should seriously enrich yourself. After all, if you don't learn things well, even if you deny others, you can't change the fact that you are incompetent."

As soon as these words came out, the faces of the people turned white and red.

But no one dares to refute.

After all, mu Qingchen is qualified to say these words. He is only a few years away from them, but their status and achievements may not be surpassed in their whole life.

In addition, they can't deny that some of his words also poked into their hearts, making them unable to face up to their problems.

Of course, they all have a strong sense of crisis now - a waste will surpass them. They really have to work hard in the future!

Mu Qingchen looked at the crowd and continued: "in the future, I don't want the same thing to happen again. Instead of saying some unnecessary words here, we might as well spend these time to seriously study what we have learned."

"Yes, sir!"

Although they were uncomfortable, they still admired mu Qingchen and nodded in cooperation.

"Back to business." Mu Qingchen said, "many people can't even refine. It seems that Miss Duanmu's refined material has any own ideas?"

There was a moment of silence before one man raised his hand.

Duanmu Ya looked at the past and found that it was a young man sitting in the first group and the last position. His face was white and tender and beautiful, but he was quite childish and felt younger than her.

Duanmu yawang seems to remember that he is one of the three people who know how to refine medicine in this class.

Mu Qingchen looked at him and said, "you say."

The boy looked very introverted. When he stood up, his whole face turned red, "When I was refining medicine, I tried to extract a substance from this spirit grass to add it, but when refining that substance, I also refined it by combining substances. However, after refining it several times, the effect was not good, and it was not as pure as the substance refined by Miss Duanmu."

Said, secretly blushed and looked at Duanmu yawang. The bottom of his eyes was secretly admiring.

Duanmuya looked up and raised her eyebrows. She was surprised, but it was rare that someone didn't mean any harm to her. She also nodded to him.

Mu Qingchen said faintly, "I didn't see your refined results about this. I can't know the specific situation. You can talk to miss Duanmu in the future, or take your refined results to the classroom to ask me, and I'll see what I can do."

"OK, thank you, sir." the boy sat back.

Mu Qingchen said to the crowd, "I remember that everyone said that refining on the spot was too time-consuming during teaching. Let's think about it. How long did it take Miss Duanmu to extract three substances?"

The boy whispered, "I calculated it specially. It won't take half an hour."

Mu Qingchen said to the crowd, "half a quarter of an hour, do you think it's a waste of time?"

"... No." they hesitated and shook their heads.

Someone hesitated, raised his hand and said, "Sir, not everyone can extract substances in half an hour."

"I'm here to give you a lesson, but I'm not here to delay you. I'll decide how much time I should give you for refining each time according to your situation and the characteristics of herbal medicine." Mu Qingchen said faintly: "But don't just listen to me like before. In class, if you don't understand, you have to ask. I don't want to see. I'm afraid you'll just listen after an hour of class."

"Just like today, I didn't ask you to refine. I didn't know it at all. I said it for so long, but none of you knew how to refine. Then my classroom teaching was in vain."

"There is another advantage of refining on the spot in class, that is, I will tell your existing problems according to the situation you refine, you can correct them, and then draw inferences from one instance and make good use of them to improve them."

As soon as they heard this, they couldn't help getting excited: "Mr. mu, you, you want to guide us personally?"

Oh, my God! This is a great thing!

They can't imagine!

Mu Qingchen looked at everyone's excited expression, but his face was still light, "only in class. Out of this class, you can treat it as if you don't know me. After class, I won't know you."

Duanmu yawang listened and couldn't help laughing. It seems that mu Qingchen still knows these people's thoughts and is afraid of trouble.

People were stunned, "Mr. mu, this..." they still wanted to get close to him!

Mu Qingge didn't care what they wanted to say, and said faintly, "you people who haven't refined the spirit grass today will go back and refine it. I'll check it in class tomorrow."