On Tubao Mountain, the giant dragon was carried by concubines, and a weather vane was placed on the highest mountain.
"What is this?"
Danzhu was commissioned by Yu Zai to make this strange thing, and Yu Zai inserted this wood-copper composite weather vane high on the highest point of these hills.
The arrow above is the shape of a goo.
"Ah, this is just a tool for measuring wind direction. Just like what I told you last time, there is nothing special about this. It just always points to the source of the wind. Looking at this thing, you don't have to manually pick up the leaves to find the wind. source"
During the Xia and Shang Dynasties, people already knew that by hanging a long piece of cloth on the head of a flagpole, they could see the direction when the wind blew. It was called "伧" at that time, and this thing was the ancient version of a weather vane.
However, the cloth strips were relatively soft and were often blown around by the wind in uncertain directions. So the ancients changed the cloth strips into bird feathers. The bird feathers are elastic in the middle and will not sway when the wind blows.
In the Han Dynasty, Zhang Heng, a famous master of black technology, created a new version of the weather vane. This is called "Xianfengwu". It is a crow made of copper and placed on the head of a pillar. When the wind blows, the crow's head will Point in the direction of the wind.
The most powerful weather vane in the ancient version is the iron phoenix on the Yuanjue Temple in Taiyuan, Shanxi in later generations.
So this thing is very strange, but the principle is very simple.
When I was working in the past, I was exposed to this thing a lot. It was more common in plateau pastoral areas.
Ruzai looked at another stone tablet on the mountain. It was a weather meter. Since the implementation of the Taihao clan, most tribes would make this thing. It is nothing more than a record of some important climate measurements and time judgments.
The main function of the weather meter is to help farming civilization observe the astronomical phenomena, avoid wind, rain, thunder and other bad weather in time, and prevent the impact on the planting and harvesting of grains.
The dragon was brought here because it has the ability to pray for rain. Ruzai brought many people with him today, but most of them were on the mountainside.
After observing the flow of wind in the area, Yu Zai thought about it carefully for a while, and then shouted down to get everyone ready to start digging tree roots.
Tree roots fix the soil. Digging out some tree roots will cause the connection between the soil not to be too close. If you cut some wood every few steps, when the heavy rain comes, this part of the mountainous area will also become more dense due to sparse vegetation and soil erosion. It is prone to flash floods and collapse.
The causes of flash floods are not complicated. Flash floods in many places in later generations are actually inseparable from the indiscriminate cutting of trees. But now, there are red pine nuts and dragonflies that turn heavy rain into heavy rain on heavy rainy days. That is not a problem. nothing.
But Yu Zai didn't plan to let his teacher go into battle from the beginning. As Dayi said, if strong men like them didn't come, what would the tribe have now?
The answer is already there.
The falcon is not powerful either. The tribe can completely defeat it by relying on its own abilities. It is incomparable to the old turtle. Now, as an important labor force of the tribe, the falcon’s ability to pray for rain can come in handy in this battle.
"This is not a fight."
When Yu Zai was asked about his preparations for this battle, he responded like this to the tribesmen who asked.
"This is a disaster and we are just trying to protect our home."
Whether it is the You family trying to attack Nanqiu or the You family about to be destroyed by a flash flood, this is indeed a disaster.
"Battle? The number of people is not equal, why is it called a battle?"
After Yu Zai calculated the wind direction, under Danzhu's gaze, he pointed to the southwest!
"Within five days, there will be heavy rain from the west, and the autumn water will arrive in time for the season!"
I have discovered that the breath is damp before. As a Qi practitioner, under the guidance of Chi Songzi, I am very sensitive to changes in Qi. In addition, the water level of some nearby water flows has begun to rise, and the water has gradually become turbid, and the weather vane has There was a lot of pressure.
The sky in the southwest looks a little dark, and the wind speed is not normal.
The vitality of birds decreased, and insects began to appear in large numbers, but soon disappeared.
Most notably, the nearby ants began to panic.
Great pressure is approaching, and the heavy rains in autumn come in accordance with the season. After this heavy rain, the weather will gradually become colder. However, in the south and Lingnan, this change is not obvious or even non-existent.
As a result, the weather is still as dry and hot as the end of summer and even the beginning of autumn, which also leads to abundant rainfall.
The Akafang clan's people began to dig tree roots in the mountain, and Youhou Xiaoxiao was taken by Dayi. Together with the stone gall, the mountain torrent could hit along the route that Yuzai wanted.
"The heavy rain in the south stopped two days ago, and Di Youshi must have been unable to hold it in any longer."
Yumeng came back from the south and told Yuzai that the big monkey seemed to have invited reinforcements, and strange sounds began to be heard from the direction of Tianbi Mountain, like the cry of a baby.
"There is a strange beast in the south called the Gu Eagle"
Chisongzi’s timely popular science: “The vulture sounds like a baby and likes to eat people.”
"It seems that this big monkey god has really found reinforcements."
Yu Zai muttered, feeling helpless.
You are strong enough, why are you looking for reinforcements? Can't you afford it?
Do all monkeys like to ask for help? Who did they learn this bad habit from?
When the reinforcements arrive, wait for me to attack from two sides, encircle and encircle me, dash from the left to the right, crush the enemy, and win this battle completely.
You are thinking of eating peaches.
Yu Zai has made so many preparations here just to prevent being taken away by the other party. After all, the Diyou clan is very powerful. With the Chifang clan's small manpower, this is no match for them...
As for the reinforcements, they were also invited, but after this, each tribe only knew that the Diyou clan might take action, but the specific time was unknown.
The main reason is that the time is too short and the journey is too long. People like Dayi can move very fast, but others cannot.
Fortunately, reinforcements were already on the way, and the mountains and fields were the first to respond, saying they would send people over.
"Reinforcements from three mountains and four fields are coming from a shortcut to Shanbo Field. They should arrive in the next three days or so."
"As for the reinforcements from Changfeng Wilderness, it will be much later."
Danzhu looked at Yu Zai, who was making plans in an orderly manner, and fell into a brief thought.
Although I thought it was ridiculous for Ruanzai to change the course of the river, after a period of observation, I found that this little wizard Ruanzai did have two brushes.
In Danzhu's opinion, his understanding of climate and hydrology is enough to enter the central water conservancy department.
"And one more thing."
Danzhu said: "My words are hard to hear... Zai, although the layout here is very complete, what will you do if the other party does not go through Shanbo's Wilderness, but takes a long way to attack the side?"
"Wars cannot be won by just thinking."
Yu Zai said: "Ah Hong, you are right, so I am going to send out a team of decoys..."
Danzhu nodded seriously: "Bait, yes, but you have to..."
Yuzai took out a wooden sign and handed it to Danzhu.
The wooden sign said "Akagata Ahead, this road section is under construction and maintenance".
And a lamb's head image was carved.
Danzhu was a little confused.
But Yu Zai said that according to Shandu God's arrogant character, if you don't let him come, he will definitely take this path!
Moreover, Yuzai specifically requested Danzhu and Yupan to go together.