The black-bellied lady of the demon king of another world

Chapter 501 Convex Lenses
"There are also the vegetables we grow ourselves. I heard from my mother that today the leader has asked them to start harvesting. They must harvest all before the rainy season, and then plant rice." The person who can speak so clearly is Di Jia up.

"But... none of us participated in it~ Didn't the leader and the priest say that you can get something for nothing~" A foreign child whispered~
"You're right." Xiao Yu looked at the talking child with a smile. That's why he often taught everyone the benefits of working. Even young children knew that they should not take other people's things for nothing. "Didn't you start working now? Today all the people went to participate in the harvesting of the planting area, and some went to participate in the hunting, such as Lal of the Jinhe tribe. Because of the news he told me, we let the Shanhai tribe With Jinhe, this is also a kind of contribution, so when their entire tribe became the right people of our tribe, they also paid off the things they ate and used on the way, that is to say, every thing they harvest now belongs to They themselves. Of course, half of them are called to the tribal warehouse, these are the food reserves left behind when everyone can’t hunt.”

"Yes~ reserve food, reserve food~" Xiao Guai bounced around like a repeater repeating Xiao Yu's words.

"Then...if we can exchange for good things..." The thick-eyed child walked up to Xiao Yu and looked up at Xiao Yu.

"Anything that is useful to our tribe in the future or now is fine!" She reached out and rubbed the child's frizzy hair, took out a comb from the small bag, and gently combed his hair, " This is the comb, give it to you!"

The child's face suddenly turned red. He took the comb from Xiao Yu and whispered thank you.

"This is for combing your hair!" Xiaoguai enthusiastically took out the comb from his bag, and gently combed his watermelon hair. Because he used to have very little hair, every time he combed his hair, Xiaoguai felt special carefulness.

That kid combed his hair imitating Xiao Guai, but...his hair is more...resistance!

Xiaoguai frowned and said: "You have to wash your hair every day, otherwise you won't be able to comb it like this~ Then you will lose your hair and become bald!"

All the children: "..."

Seeing everyone's expressions of fear of being bald, Xiao Yu said with a smile: "It's right to pay attention to personal hygiene! Let's go!"

Xiao Yu brought the children to the lake and told them to get some hay, and then divided the hay into several small piles.

She took out the crystals that had been ground in advance yesterday, and these crystals were exchanged from Uanda!If the slaves were to be believed, she was going to take them to try making glass after the rainy season.Since such expensive bamboo paper has been exchanged, glass will definitely become a sought-after item.

Xiao Yu took out the crystal chip and summoned all the children over, and the carrot heads surrounded Xiao Yu, "Look, this is a crystal, some people may have seen it, some people may have bought it, but it doesn't matter, I'm Let me tell you, we can use stones or other tools to polish the halo of this kind of transparent thing, mainly to polish the surrounding area, making it thicker in the middle and thinner in the surface, so you can touch it and feel it.”

As he said that, Xiao Yu took out a few crystal crystals and handed them to the children, so that all of them could touch them with their little hands and feel the appearance of the crystal crystals.

Xiao Yu smiled: "We can call this crystal with a thin edge and a thick center a convex lens."

(End of this chapter)