Looking at the Son of Heaven who had been busy all day, Bai Jie pouted, made a pot of tea and brought it up: "Your Majesty, this is oolong tea, it can refresh your mind." ”

"But the slave maid still has to say something, Your Majesty should focus on the society of the country, and don't overwork~~~"

"I know!"

Picking up the pot of "oolong tea", Liu Xie took a look, and saw that the tea was refreshing and pleasant, with a golden color of honey green.

"Suck ~~~"

Take a sip, only to smell the fresh and elegant aroma of tea, and the aroma is tangy.

"Ah~~~"

When you take a bite, the throat rhyme is rich and long-lasting, and the aroma is unique.

"Really good! Xiaojie, your tea skills are very advanced! ”

The Son of Heaven's endless aftertaste of enjoyment greatly encouraged Bai Jie, walked behind the Son of Heaven, and gently caressed it, so that Liu Xie's brain was even clearer.

"Xiaojie, you are my baby~~~"

Grabbing the pair of white and tender fragrant hands, Liu Xie took a sip lightly, and her face was hot with shame.

Putting the tea cup aside, Liu Xie enjoyed the caress of the beauty and continued to create the Dahan disaster prevention manual.

Droughts often lead to locust plagues, and in Liu Xie's memory, three years later, there may be a continuous drought year.

So next, how to resist the drought has become a serious illness for Liu Xie.

For the extreme drought, we must prepare in advance, such as water conservancy projects, water resource storage, and the utilization of rainwater resources.

In the next few years, there may be continuous rain and snow, so there is plenty of rain, and it is necessary to pay attention to water conservation while preventing floods.

As long as the rain in the past few years is stored, then in the next few years, or even ten years of dry weather, the Han family will have a chance to breathe.

Of course, there is another point, within three years, it is best to dominate the world, otherwise when the drought and military disasters will increase, the people of the Han Dynasty will fall into extreme pain.

Pick up the pen. Unfolding a new volume of brocade silk, Liu Xie couldn't put down the pen for a long time, and finally had to write a few sentences.

In three years, there will be a great drought in the world!

There are three strategies for drought prevention. The first is that the people dig deep wells, the second is to store rainwater, and the third is to control the river.

After writing, Liu Xie put down the pen because of this matter of opening a river to store water. It's not something that can be decided by slapping a board.

It is necessary to carefully investigate in advance, select low-lying areas suitable for water storage, and then mobilize craftsmen to dig mountains and rivers to divert water into the reservoirs.

In addition, the water storage area should be convenient for irrigation of farmland and be able to stop flooding.

Otherwise, after heavy rain, the reservoir will collapse, and the last unlucky people will be the Han people.

Therefore, Liu Xie now plans to ask Sikong Huang Wan, who is in charge of water conservancy projects, city defense construction, palace construction, and other affairs, to find some experts in water conservancy. Do some research and find out the low-lying land that is suitable for water storage, preferably if there is a lake that can store water for hundreds of miles.

Liu Xie vaguely remembered that fifty years ago, when Emperor Shun was still in the period, there was a water conservancy big Niu Ma Zhen, who was appointed as the Huiji Tai Punctuality, carefully examined farmland water conservancy, mobilized the people, and created a 300-mile mirror lake. The length of the embankment is 127 li, the circumference of the lake is 358 li, the upper flood is stored, and the lower is salty tide. When there is a drought, the lake irrigates the fields, so that more than 9,000 hectares of fertile land in the Shanhui Plain can be harvested in drought and flood.

Now Liu Xie wants to establish several reservoir lakes of this scale in Guanzhong.

The rainwater of the past few years is stored and used to prevent drought.

For example, Liu Xie has an idea now, and it still benefits from later generations.

The largest tributary of the Yellow River is the Wei River, and the largest tributary of the Wei River is the Jing River.

The Jing River originates from the eastern foothills of Liupan Mountain. The south source comes from Jingyuan County, the north source comes from Guyuan, converges with Pingliang, flows east through Pingliang and Jingchuan into Changwu County at Yangjiaping, and then passes through Zhengping, Tingkou, Bin County, Jingyang, etc., and is injected into the Wei River in Gaoling County.

At the end of the canyon downstream, the texture is loose and easy to be washed away, and after hundreds of years of extensive reclamation in the Qin and Han dynasties, soil erosion is extremely serious.

Therefore, in this place, floods often occur, only on the bamboo slips, it is recorded that in the past 50 years, the lower reaches of the Jing River have collapsed three times, once covering Gaoling County, and the overflowing river water even spread to the foot of Chang'an City.

Liu Xie planned to build a large reservoir at the end of the lower reaches of the Jing River, on the left of Chunhua County and on the right of Liquan County, with an estimated radius of at least 80 li.

This can store water to prevent subsequent floods, slow down siltation in the lower reaches of the Wei River, raise the riverbed, and reduce the possibility of collapse in the lower reaches of the Jing River.

In addition to storing water from reservoirs, Liu Xie also wants to divert water from the Yangtze River into the Yellow River and carry out a south-to-north water diversion project; There is also the Yellow River that needs to be harnessed, and the embankments should be strengthened.

This is because these three years are mainly to prevent floods, and then to fight droughts.

From the study, he turned out a volume of bamboo slips about water conservancy in Guanzhong, which recorded the largest water conservancy project in the land of Sanfu - Zhengguo Canal.

This canal was built during the reign of Emperor Yingzheng of Qin and was presided over by Zheng Guo, a water conservancy expert from South Korea.

At that time, Zheng Guo was ordered to consume the national strength of Qin, so he built a huge water conservancy project in Guanzhong, which was completed about ten years later.

Divert Jing water in the west and inject Luo water in the east, as long as more than 300 li, the Jing River is washed out from the mountains in the north, flows to Liquan and enters the Guanzhong Plain.

And this Zheng Guoqu did not succeed in fatigue Qin, but greatly benefited Daqin.

It is recorded in the history books that Zheng Guo filled the water with the water of the Yan, irrigated more than 40,000 hectares of land, and harvested all acres for a minute, so Guanzhong was a fertile field, no murderous year, Qin was rich and strong, and died and the princes.

One bell was six stones and four buckets, and the yield per mu of the six countries of Kanto at that time was one and a half stones.

Such a terrifying yield per mu has multiplied the national strength of the Qin State several times, and it has established a strong capital that is enough to wipe out the Six Kingdoms.

After the emperor of the Han family ascended the throne, he was also very interested in Zheng Guoqu, for example, in the sixth year of Emperor Wu's Yuanding, Ni Kuan, Zuo Nei, presided over the construction of six auxiliary canals, in order to benefit Zheng Guo's lofty fields.

In the second year of Taishi, Zhaozhong doctor Bai Gong built the white canal, passed through the Zhengguo canal to divert Jing water, the first valley mouth, the tail into Liyang, Zhuweizhong, 200 miles, irrigated more than 4,500 hectares.

And this white canal is located in the south of Zhengguo Canal, which is the north and south trunk canals of an irrigation area.

In the fourth year of Jianping, Dr. Guanglu rested and bowed to "hold the festival to protect the three auxiliary waters", and inspected the management and operation of the inspection channel.

There are also five years of Guanghe, that is, ten years ago, Jingzhao Yin Fanling, in the lower reaches of Jingshui, Yangling County built Fanhui Canal, Xuzhi brine field, turned into sweet soil.

Although for 400 years, the emperor of the Han family has always attached great importance to water conservancy in Guanzhong and often dug new ditches, but the reduction of the fertility of the fertile fields in Guanzhong is an inevitable fact.

The current yield per mu is far less than that of the pre-Qin Dynasty, but there are still three stones per acre.

"Whew~~~"

Liu Xie let out a heavy breath, it seems that I still need to build other canals, on the one hand, to irrigate the surrounding farmland, and to connect several rivers together to facilitate the diversion of water.

For example, Liu Xie now has an idea, one is to inject water from the tributaries of the Han River into the tributaries of the Wei River and establish a hundred-mile-long canal, which can not only communicate the Yangtze River and the Yellow River, but also make the west of Guanzhong fertile and fat.

Of course, this Han version of the South-to-North Water Diversion Project requires water conservancy experts in this period to explore and investigate the feasibility!

According to Liu Xie's view, if the water of the Han River, the largest tributary of the Yangtze River, can be diverted into Guanzhong.

Even if the drought continues for decades, the impact on the land will not be fatal.

To complete so many large projects, Dahan needs nearly a million laborers!

"Hehe~~~"

Liu Xie put down his pen and looked to the north, with a cold edge in his eyes, which made Bai Jie on the side look frightened・・・・・・ (to be continued.) )