"Hurry up, get these cut planks over!"

"Gong Nan, take this ladder over there!"

"Gongshan, when your roof is repaired, go and help the others!"

The bowstring stood on the platform and kept shouting, and the tribe was in full swing.

Last night, Lu Ning suddenly gathered everyone together and announced the news that there would be a thunderstorm soon.

At first, people didn't believe it.

Thunder, rain, wind and cooling, these changes in climate and celestial phenomena are completely the embodiment of the will of the gods for people today.

Even for those who are not very firm in their beliefs, it is "most likely that there is some God who is really manipulating".

Therefore, although Lu Ning gave them a series of orders to establish preventive measures, most people did not take it seriously.

It wasn't until Lu Ning, with the help of the ghost, accurately predicted the duration and rain points of the next shower that everyone realized that the thunderstorm Lu Ning was talking about did not seem to be a whimsical statement.

But how, exactly?

To be honest, everyone present had no experience with this, including Lu Ning.

But after experiencing so many things and learning so much knowledge, Lu Ning is still able to anticipate some problems more or less, and brainstorm and discuss with everyone how to avoid these problems.

According to the ghost's speculation, it should be some time before the rainstorm actually falls.

The cumulonimbus clouds have not yet fully formed and have not yet spread to the sky here.

Now the rain is just a prelude.

There is probably a buffer period of about ten days before the real rainstorm comes.

During this time, the public can also make some countermeasures to these problems.

First of all, the biggest problem is that the current house will leak rain.

Most of the houses in the Yongle tribe are now square-shaped, and they look like matchboxes made by newcomers when they first start playing with minecraft.

Since the Breeze Plains are generally relatively windy and rainy, there are not too many climatic disasters.

The previous cold spell and blizzard were also extremely rare surprises for them.

Therefore, when building these houses, the chief designer Li Yuanzhou listened to the descriptions of the people of the Feiyu tribe, and did not adopt additional waterproof design for the roof in order to shorten the construction period and simplify the process.

This year, the climate is so capricious, and it has just experienced a great cold, which is about to come again with a torrential rain.

The current light rain is still able to deal with it, but it is just a little leaky.

When the actual rainstorm comes, the roof won't be enough to see.

Therefore, the house naturally had to be remodeled.

The first thing to do is to change the shape of the roof.

A perfectly straight roof will not only withstand the impact of rain, but it will also cause a lot of water to accumulate and damage the roof.

So it was easy to imagine that the roof had to be remodeled into a sloping style.

Originally, what everyone thought was actually very simple.

How difficult can it be to tilt the roof upside down?

Isn't it just a matter of building a shelf and laying two layers of planks diagonally?

However, in fact, when it came to the discussion and design stage, Lu Ning found a large number of problems one by one and rejected them one by one, and everyone found that it was such a simple roof, and there was so much knowledge hidden in it.

The first is the selection of materials.

Wood boards are not really completely rainproof, even if they are coated with the waterproof coating that Lu Ning is debugging the formula, it can only play a role in delaying the penetration of wood by rain.

This waterproofing coating can be used to coat the main body of the house, but it is not enough to use it on the roof, which is directly exposed to a lot of rainwater.

After thinking about it, ceramic tiles are still the most ideal solution.

But I'm afraid the timing will be very urgent.

And the recent long showers are not suitable for pottery firing. Moist air and dark skies will make the clay difficult to cool and set, and it will be easy to soften.

But fortunately, the ghost gave him good news: the rainy days would not last forever, and in the days leading up to the rainstorm, there would be no rain for three days, and the sun would be visible.

Therefore, in the end, Lu Ning still decided: burn pottery tiles and lay out the roof.

Prepare for the realization and wait until the days when the weather is better to open the kiln and burn the tiles.

The problem of the material was solved, and then it was the style of the roof.

It's a matter of "leaning over".

However, there are many types of sloping roofs, and different types of roofs correspond to completely different usage scenarios, so it is not necessarily easy to use if they are tilted.

For example, in the blue starfish of China, the most common and simplest "hillside" shaped roofs have three different categories: "hanging mountaintop", "hard mountaintop", and "resting mountaintop".

"Hanging Peak", the middle ridge is high, the two sides are obliquely falling, and the eaves are hanging out of the wall, so it is called "Hanging Peak". The overhanging eaves can effectively shelter the rainwater and prevent the walls from being invaded by rainwater.

"Hard hilltop", the eaves stop at the wall and will not be overhang, which is more suitable for the brick wall of the house itself with waterproof effect, so it does not meet the current needs of the Yongle tribe.

"Rest the top of the mountain", on the basis of the hanging top of the mountain to add a slightly slower outer eaves, because the slope presents a two-stage type, it seems to be a place for travelers who climb the mountain to rest, so it is called "rest the top of the mountain". This type of roof is better at sheltering from rain than a hilltop, but it is more complex to manufacture and requires more materials.

However, there is also an optimization scheme on the top of the mountain, that is, the outer eaves are only made of the side walls on both sides, and the front and rear sides are still in the normal style of hanging the mountaintop, so that the original two-stage style is changed to a whole, simplifying the process and consumables.

In addition, there are many more complex complex, overlapping, and other completely different styles of roofs, but they are not relevant to the current situation, so we will not mention them for the time being.

In the end, considering the intensity of the rainstorm, the consumption of materials and the skills and experience of the people, Lu Ning decided that the style of the roof should be improved from the top of the mountain.

So now, under the command of the bowstring, everyone is adding a new skeleton to the top of their original matchbox, and when the tiles are ready, they can be laid out directly.

But that's not enough.

Lu Ning sat on the roof and watched everyone running around anxiously, thinking about it in his heart.

"By the way, there is also a door......" Lu Ning looked at a house opposite.

"Water can back up into the house, so you have to put up a threshold to stop it.

"It would be better to dig a ditch to divert the water that has fallen into the tribe, and that might be better.

"In addition, there is farmland, and the heavy rain may lead to problems such as crop yield reduction and soil erosion, but fortunately, there is a lot of grain stored in the granary before, and it is not a big problem to support it for a month, but I am afraid that it will not be able to continue planting in the middle. No, maybe you can use this to improve some new aquatic products with alchemy......"

Lu Ning scratched his head.

It seems that I have thought about it comprehensively, but I always feel that there is something I haven't noticed.

What is it exactly?