When Shen Nong and the others walked back to the tribe from Luo Man, it was already a day later.

At this time, on the grass outside the cave of the Huangqiu tribe, there were several extremely simple wooden houses, all of which were made of wood, branches, and leaves, which were full of natural flavor.

The lower part of the wooden house is square, and the roof has a triangular roof that slopes down to the left and right, so that when it rains, rainwater can be easily drained to the ground along this slope and will not seep into the house from the roof.

The roof is made up of large, wide leaves, and is five layers thick inside and out, enough to keep out every drop of rain, and to protect the people living in the hut from the scorching sun when the sun is shining.

The four walls of the hut are not made of wooden planks, but three round stick-shaped pieces of wood are inserted into the soil side by side, each with an arm's length apart, and then Kura and others use a wide flat strip of wood to pass through the left side of the first log, then go around the right side of the second log, and finally get stuck on the left side of the third log.

In this way, the wooden strip can be firmly stuck in the three pieces of wood, and so many steps are cycled many times, and after dozens of wooden strips are stuck into the three pieces of wood, a simple version of the wooden wall that is enough to shelter from the wind and rain is formed.

These production techniques were all painted by Shen Nong on animal skins in the way of painting and left them to Cang and others to learn, but fortunately, the brains of the four of them were also clever enough, and they completely mastered all the meanings that Shen Nong wanted to express.

"What is this?" After seeing those wooden houses, Chi immediately couldn't help but say, and he didn't know whether he was talking to himself or asking Shen Nong.

At this time, Cang's figure walked out of one of the wooden houses, and when he saw Shen Nong, he hurriedly greeted: "Wu, you are back." ”

"Hmm. Shen Nong nodded: "Are these wooden houses built exactly according to the method I painted?"

"Both. Cang wiped the hot sweat from his face with his arm and said, "The main thing is that there is too little wood in our tribe, otherwise we can build a few more." ”

"It's okay, just take your time, anyway, the people can't get used to living in this kind of house right away. Shen Nong said.

"Wu, why don't you go in and have a look, you haven't seen anything inside the wooden house yet. ”

"Okay, then you give way first, otherwise I won't be able to get in if you block here. ”、

When Shen Nong designed the wooden house, he only left a normal human-wide entrance and exit for the wooden house, that is, the door, which was designed to avoid too much air leakage in the house, which would make the clansmen catch a cold when they slept at night.

But now from the physical situation, this design is a bit flawed, because the wooden house cannot allow two people to enter and exit at the same time, if the people inside want to come out, then the people who want to enter outside have to get out of the way first, and vice versa.

However, this defect can be regarded as dispensable, the people of the Huangqiu tribe are so idle on weekdays, and they don't care about such a little time to give up and retreat.

After entering the wooden house from the position of the door, Shen Nong immediately felt the dimness of the light in the house, because the whole wooden house was completely closed except for the door, and the light transmission in the house was very poor.

In addition to this, Shen Nong also felt with his feet that the shape of the ground was uneven, full of soft grass and soil, and it was obvious that Cang and the others had not leveled the ground before building the wooden house.

This makes it easy for the wooden house to be blown away by the strong wind when it encounters a strong wind when it is facing a rainstorm, and the people living in it will face homelessness again.

After carefully inspecting the situation in the house, Shen Nong walked out of the wooden house, clapped his hands and said: "It's still good overall, but you have to remember to step on the ground flat and hard, if you are tired of stepping on it with your feet, you can try to hit it with stones, anyway, you must make the ground hard." ”

Kura glanced inside the room, then nodded and said, "Oh, I see." ”

"And. Shen Nong patted Cang's shoulder: "The light in the wooden house is too dark, and the clansmen who live in it will not be able to see the environment clearly at night, you can make me something to go in." ”

"What to build?" Cang asked curiously.

"Stoves and chimneys. ”

Shen Nong turned his head to look at Chi: "That, you go to find the bone peck and ask him to bring my painting tools." ”

"Oh. Although Chi didn't understand what this painting tool was, he still knew what it was, and as he followed Shen Nong for more and more time, Chi gradually got used to hearing some words from Wu Kou from time to time that he didn't know what they meant, and he would be puzzled at first, but it didn't matter after a long time.

Pecking bones is worthy of Shen Nong's number one dog's leg, although he doesn't know what Shen Nong's drawing tool is, but when he learned from the mouth that Shen Nong was going to explain something to Cang, he immediately reacted that what Shen Nong wanted must be the bone stick that Zisang gave to Shen Nong and the two-bone bottle of beast blood.

Without giving the worm time to react, the peck bone ran directly into the small cave where Shen Nong lived, and then quickly ran to Shen Nong with the bone stick and bone bottle.

"Wu, give. smiled innocently.

"Isn't there any animal skin?" Shen Nong took these two things and was stunned: "How can I draw without animal skin?"

"Ugh. The pecking bone was speechless for a moment, but soon he reacted again, turned around and bent down directly, and said, "Wu, you can paint me." ”

"Then don't move. Shen Nong didn't bother to be polite to him, so he directly poured the beast blood in the bone bottle into the small hole of the bone stick, and then drew it on the animal skin coat on the back of the bone peck.

A stove can bring light and warmth to a wooden house, and although it is not needed during the day, it can be used very well in the evening.

The temperature difference between day and night in the location of the Huangqiu tribe is very large, during the day because the dry season is coming, the temperature can make people hot all over the body is sweat, and the sweat is like a leaky faucet and does not need money to overflow from the body.

And in the middle of the night, even if the dry season is coming, the temperature is also said to drop, although it is not below zero, but Shen Nong estimates that it is very normal to have a 4-9 degrees, anyway, he has to wrap in animal skins every night, and then lie on the dry grass and animal skins to warm up and sleep.

In this case, it is extremely important to have a stove that can bring a steady stream of heat, but since the stove is built, it must be compatible with the wooden house, that is, the fire burning in the furnace will not be accompanied by the burning of the wooden house.

How to build this furnace to be safe is a great test of Shen Nong's construction knowledge.