By the time Lin Yan said that his mouth was dry and he finished finishing all the things he had copied from the Science and Technology Museum about paper and pen, more than ten minutes had passed.

As soon as they finished speaking, they began to ask questions, and all kinds of questions continued.

Before the trial, they should try to consider all possibilities and strive for success in a short period of time.

Mao Mu and Lin Yun also have problems burning charcoal, involving the temperature and sealing degree of kiln firing.

In the end, Lin Yan spread his hands and said: "The process and principle are roughly like this, as for the specific operation, we will talk about it when you encounter problems after you do it." Although pen and paper are important, others cannot be left behind, such as the transformation of textile machines. And you have learned so much, usually think about how to innovate and improve your daily life. ”

In fact, Lin Yan also knew that they were all very thoughtful, but the cold season was very restrictive and could not be tested.

When the hot season arrives and conditions permit, they will definitely bring a lot of surprises.

She's still looking forward to it.

By the end of December, the temperature had risen significantly, the biting cold wind was gone, and the oncoming wind was warm and warm.

The ice and snow are gradually melting, the tenacious grass and trees are sprouting, and the time has come for everything to recover.

People cats for three months, dresses lightly, walks out of the house, and starts the new year.

At the beginning of the third year of the Sun Era, it was also the fourth year of Lin Yan's birth.

Since the house was built and people moved from the cave to live in the house, two cold seasons have passed, and no one has died from the cold.

Under Lin Yan's advocacy, people's living habits have changed day by day, the feeding of little dolls has become much more refined, and the survival rate of children has improved a lot.

Although no detailed statistics have been made, every family has a number in their hearts, which cold season in the past did not die, especially the frail children are the most difficult to survive.

More people realized the benefits of changing living habits, realized that what Lin Yan said was true, and subconsciously followed her family learning.

As long as there is any movement in Lin Yan's family, it will soon cause a trend, and needless to say, people will consciously do it.

Unconsciously, Lin Yan has become a fashion-leading figure in Sun City.

So, just after the cold season, she took the aquatic people with them to collect weeds and dead branches for experimentation, and before they could figure out what she wanted to do, they followed suit.

When Lin Yan saw more and more people carrying baskets and mowing grass to bring home, she finally realized that something was wrong. I don't know why I said, "Why is everyone here to mow the grass?" Could it be that the cold season has exhausted all the haystacks accumulated at home? ”

"Probably not, I still have a lot at home, enough to feed the pika." Aquatic was also a little puzzled.

"Just find someone to ask, you wait, I'll go." After Huang Ying finished speaking, she walked to the woman closest to them.

Soon she returned, and the woman who had been mowing the grass hesitated, not knowing whether to continue.

Hua Min hurriedly asked, "Did you ask clearly?" ”

Huang Ying nodded, and said with a smile: "They are learning from us, in the past two days, everyone has been collecting weeds everywhere, and others have followed suit, and they think it must be of great use, so they all came." I've just told her that we're going to be the material for the experiment, and it's useless, and she's still skeptical. ”

"Can it still be like this?" Hua Min's eyes widened and she looked at the woman over there, "She doesn't seem to want to give up." ”

Mao Mu looked at it, "I'll go over and tell her to stop mowing the grass." ”

Lin Yan couldn't laugh or cry when she heard this answer, if there was any benefit, she would have encouraged everyone to do it together, how could she act alone.

Under Mao Mu's persuasion, the woman hesitated for a while and turned away.

Next, when they meet other people on the road, they will also persuade them not to follow them in vain.

The test materials are not ready, and no one knows what the results will look like, and these weeds will not be used for the time being. I don't know which one is better, and it's too late to let others mow the grass together when the test results come out.

Five days passed, everything was ready, and a group of people gathered together to prepare for the experiment in the courtyard of Lin Yan's house.

They collected more than a dozen kinds of weeds, prepared many clay pots, assigned tasks to each person, and began to conduct paper-making experiments.

Lin Yan and Ye Congren were physically limited, so they didn't do anything.

The remaining nine people, each responsible for one or two kinds of weeds. Soak chopped weeds in clay pots, some with water, and some with plant ash, earth, charcoal powder, etc.

They used everything they found that they might use, and since they studied chemistry, they know the mystery, and all kinds of things mixed together can bring about all kinds of chemical reactions.

The papermaking test is a process of inspection, and they are not willing to let go of any possibility.

Everyone is serious and persistent, observing the changes in the clay pot every day.

After only one day, some of the clay pots stinked, while others remained unchanged.

The smell is mixed, and the yard is filled with all kinds of strange smells from time to time.

Bonus, knowing they were going to do the experiment, didn't expect it to be like this.

On the third day, there was a clay pot that smelled so unbearable that she couldn't help but ask, "What are you doing, why does it stink?" Will you be able to eat later? ”

Lin Yan was also uncomfortable, she underestimated the consequences of the experiment, and it was a mistake to put it in her yard.

"Auntie, bear with me first, let's do it in a few days in another place."

Bonus: "It's a big smell, it smells fine, right?" ”

"It should be fine." Lin Yan was also not sure, she forgot to do test protection, and she didn't expect such a situation to occur during the test at all.

"Everyone, stop for a moment and listen to me."

The people who were burying their heads in the records all looked at Lin Yan, and they all came to observe and record between classes.

"Lin Yan, you say, let's listen." Mao Mu said loudly.

The others nodded.

Naturally, they smelled the smoky smell, but thinking of what they learned in chemistry class, the various changes brought about by chemical changes, this should be normal, and they just passed it when they thought about it.

In order to make paper, they can endure this little suffering.

Lin Yan asked everyone to go back to the house first, and then they couldn't stay in the yard.

They did not leave immediately, but carefully made the records in their hands, sealed the clay pot, and then went into the house.

Seeing that everyone was looking at him, Lin Yan coughed and said embarrassedly: "I forgot something, chemical tests are harmful, we have to do protection." Hongling, you use the finest twine to weave into cloth and make masks for everyone. ”

"What does a mask look like?" Red Spirit asked.

Lin Yan took a charcoal pen and drew a mask on the slate, and said how to do it.

Hong Ling nodded after seeing it, "It's not difficult to do, I'll do it when I go back at night." ”

"I'll help you." Huang Ying said to the red spirit.

Others also said they would help make masks. It's something they're all going to use, and we should all do it together.