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Looking at their progress, Tang Lele was also very happy. "Sister Mona. When Noah saw Tang Lele coming, he immediately shouted. Coming to the valley, Noah, who has been in the valley for almost two years, has also grown into a young man.

However, he now reveals that this does not belong to the calmness and wisdom of this age. Tang Lele thought that if this child had been in his previous life, he would definitely have been able to become a great inventor or scientist.

"Well, what are you studying?" Tang Lele saw several of them gathered together, as if they were begging for something more enjoyable.

Noah then said, "It was we who used this kind of stone and clay to develop something that is very suitable for building a house. It's more viscous than clay, and it's strong. ”

Tang Lele looked at the stone in her hand and knew that this thing was limestone, which had a wide range of uses, and these stones were all rare stones that Allen and the others went out to look for.

As soon as she found it, she made a judgment and threw all the stones she thought were useful to Noah and the others, could they really have researched something?

"Well, then tell me, what did you do?"

They also developed bronze, with copper, Tang Lele felt very happy, but must also discover some rare substances such as tungsten wire or something, in order to invent the light bulb. But she is not in a hurry, she knows that one day, these things will come true, even if she can't achieve them in this life, her descendants will make these things come true.

She told Noah how to make some original light bulbs, after all, she had seen how Edison invented the light bulb before, although she had not experienced it, but maybe Noah and others would be able to make it in the future?

"Sister Mona, we have fired these powders, and when we add water, they can turn them into mud, and then put them between two bricks, and after a while, the two bricks will be glued together, and it will be difficult to separate them. ”

Hearing Noah say this, Tang Lele said happily: "Very good, this is cement." ”

"Is this called cement?"

"Well, they can make a big difference in building houses, and roads, and bridges. ”

"Build roads, bridges?" They know how to build houses, but a few orcs who build roads and bridges don't understand.

Tang Lele looked at their puzzled looks and said: "You don't have to think about it, you will know in the future, now you are still far from that step, now you only need to fire more cement." By the way, these limestones can also be calcined to produce another white substance, called lime, which has the same effect as cement, but it can also make the house snow-white, very beautiful, you can think about it, see if you can study it. ”

"Okay, Sister Mona, we'll work hard. "Noah, they recorded everything Tang Lele said. Tang Lele was thinking that in the future, when these things are available, it will be much easier to build a strong city or something, watching Noah and the others stay in this house every day to study what they say. She said with some emotion: "It's really hard for you, you have sacrificed too much for the valley. ”

"Sister Mona, we are all voluntary, and we also like to study these, you don't know how happy we are when we study something you say. That feels better than doing anything else. ”

Noah's eyes were shining, because the things that were researched were not available in this world, and only in the valley, it made people feel proud to think about it.

"I know, but you're supposed to play like the other orcs or do something else, but you're locked up here, facing these ...... every day"