With Shen Qingqian's words, Wu's heart was steady, but she still had a problem.

"The shed in our field has tried to burn the fire in the past two days, but the effect is not ideal, sometimes the smoke is big, people can't get close, and I come back late today, just to see how to solve it."

Shen Qingqian patted his head, "Look at me, just say that I seem to have forgotten something important, I'll go draw a drawing in a while, and tomorrow you will show it to Brother Jiang, and then ask Uncle Wu from the opposite yard to watch and add heat pipes to the ground." ”

Wu was a little confused, and Shen Qingqian briefly explained the principle of heat conduction.

"So that's the case, let's do it, we'll discuss it tomorrow."

There were people in the army in charge of the medicinal herb field, so everything was going smoothly, but Shen Qingqian's small valley was a wasteland, and they had to solve it by themselves.

The creative enthusiasm of the working people is endless, and in a blink of an eye, a few days have passed, and Jiang Goudan has made the same heat conduction pipe on the side of the small valley as the one on the side of the medicinal herb field.

The difference is that briquettes are used as fuel on the medicinal herb field, and firewood is burned on the small valley side.

Ever since coal crossed the Ming Road in the Northern Hubei Army, Qin Lao and the others have been studying the use of coal.

The tool for making briquettes is still the picture drawn by Shen Qingqian's prompt Shen Xiao, and the finished product is similar to that of modern briquettes.

Speaking of which, I have to mention by the way, the army now cooks not firewood, but briquettes.

In addition to having a stove, this thing is really much better than firewood.

Back to the present.

The day passed quickly, and Shen Qingqian returned to Qin Lao's courtyard from the medicinal herb field.

"Brother Sun, go back first, I'll go over by myself." Shen Qingqian smiled and refused Xiao Sun's escort.

Shen Jun and the others wanted to send her, but their current identity did not allow them to walk around casually, so Xiao Sun volunteered to accompany Shen Qingqian to Qin Lao's every day.

"It's okay, it's just one more turn, it's still on the way." Xiao Sun waved his hand and smiled.

He didn't have any bad intentions for the sixth girl, but he just felt that she was a little girl's family, and she finished work late every day, so he was afraid that she would not be safe on the road.

In the past few days, the big guys have watched the medicinal herb seedlings in the ground emerge one after another, especially the one where it is said that the six girls used the secret recipe to plant, it has only been less than five days, and they have grown more than a foot tall!

Imperial Physician Hu and the people of Jingrentang all thought it was incredible, not to mention these apprentices, they could worship the six girls for a day. Night.

He said this, Shen Qingqian naturally didn't want to say more, quickened his pace, and returned to Qin Lao after a while.

Before the old man came back, Shen Qingqian went to the kitchen to prepare supper for him, and boiled hot water by the way.

As soon as she rolled out the noodles here, she heard the voices of Qin Lao and them in the courtyard.

Qin Lao's courtyard is not the only one who lives in him, but also the two apprentices who are in charge of his life and daily life with him, Chen Jun and Deng Kai.

Shen Qingqian pulled the bellows a few times, the fire suddenly became bigger, and the water in the pot that had been warm quickly opened.

"Ah, it's so fragrant, teacher, the sixth girl made you supper again." Deng Kai looked enviously in the direction of the kitchen and swallowed his saliva.

Chen Jun hurriedly went to pull him, "Let's go back to the room first." ”

Although he is also greedy, but the six girls of the family do it for the teacher, if they get together, wouldn't it make it embarrassing for the family?

"Brother Jun, Brother Kai, I also made a bowl of noodles for you, you go and serve it." Shen Qingqian walked out of the kitchen with Qin Lao's bowl and smiled at a few people.

Old Qin's originally tired expression was swept away, and he looked at Shen Qingqian with disgust, "Didn't you ask this girl not to toss at night?" ”

"Don't toss, you're tired for a day, hurry up and go into the house to eat noodles." Shen Qing urged with a light smile.

"I said you......" Qin Lao wanted to say a few more words, but his words were interrupted by a figure that suddenly fell from the sky.

"Sixth sister, come with me!"

Before Shen Qingqian could react, the whole person was held and lifted into the air!