Guo Shoujing, a scientist of the Yuan Dynasty, peddled Zhang Hua a grand water conservancy project plan.

Guo Shoujing made detailed plans on the topographic map of Guanzhong. Zhang Hua probably knew that this was a canal across the northern part of the Guanzhong Plain, and horizontally traveled with Weiwei, fully irrigating the plains in the northern part of the Guanzhong Plain and increasing the number of farmland in northern part of Guanzhong.

Zhang Hua annexed Liu Yuan and An Lushan's forces happened to occupy the northern part of Guanzhong, so Guo Shoujing would sell his blueprint to Zhang Hua at this time.

When Zhang Hua was guiding Guanzhong, Guo Shoujing had already begun planning the water conservancy irrigation project in Guanzhong.

As a hard-working civilian, wherever Zhang Hua attacked, Guo Shoujing's water conservancy irrigation project would be built.

Guo Shoujing is undoubtedly the most important minister of hard work for Zhang Hua, who likes farming. His help to Zhang Hua is no less than Fan Zhongyan, Han Fei and others.

Civil officials do not necessarily look at their political values, but also at the field they are good at.

If the project proposed by Guo Shoujing this time can increase the farmland by millions of acres, it can feed one million more people.

With a population of one million, there are another 100,000 elite soldiers.

It is precisely because of this that Guo Shoujing strongly advocates this water conservancy project.

"This project seems familiar."

Zhang Hua carefully checked the blueprint of water conservancy projects drawn by Guo Shoujing and always felt familiar.

Guo Shoujing confessed: "This project was improved on the basis of the Zheng State Canal. King Ying Zheng of Qin ascended the throne. Han was afraid of Qin, so he sent a water labourer Zheng State to Qin and offered suggestions to build the canals, which consumed Qin's manpower and wealth and weakened Qin's army. However, this move backfired and made Qin more powerful. Guanzhong became a fertile land, and Qin was rich and strong, and eventually joined the princes. Because the water labourer was called Zheng State, the water canal was called "Zheng State Canal".

"It turned out to be Zheng Guoqu."

Zhang Hua said why this canal is a bit familiar. It turned out to be the Zheng State canal built by Qin during the Warring States Period.

The Guanzhong Plain has not been developed much now and is quite primitive, so there is no Zheng Guo Canal.

If Zhang Hua wants to develop the northern part of the Guanzhong Plain, he will need to mobilize a large amount of manpower and material resources to rebuild the Zhengguo Canal and expand the farmland area in Guanzhong.

Zhang Hua asked in detail: "How long did it take for Qin to build the Zhengguo Canal?"

Guo Shoujing replied: "The records are not detailed, it is about ten years."

"Ten years, too long."

Zhang Hua finally knew what a ten-year-old tree is, and a hundred-year-old tree is.

Water conservancy engineering is like developing education. It takes a lot of time and can only see results in the long run based on years. This is the case with the Grand Canal of Beijing and Hangzhou.

What's more, the construction efficiency in ancient times was extremely low.

Guo Shoujing said: "At this time, there were more people in Guanzhong, and the strength of the township heroes, craftsmen and livestock was greater than before. Therefore, in about three to five years, the Zhengguo Canal could be completed."

"From now on, you will be responsible for on-site investigation and confirming the path to Zheng Guo Canal. When I attack Emperor Xuanzong of Tang and Duke Xiao of Qin, I will build a large-scale construction and gather 100,000 township tycoons to excavate Zheng Guo Canal."

Zhang Hua considered that there were two major forces, Emperor Xuanzong of Tang and Duke of Qin, who were eyeing each other, Li Zicheng, Cao Zhen and other forces were not ordinary people. They could not build large-scale projects without external stability. Otherwise, not only will the people's sentiments decline, but they will also delay the war and give foreign enemies a chance to drive in.

Before Zhang Hua wiped out the powerful enemy, Guo Shoujing was responsible for leading the officials of the Water Resources Department to inspect the site selection of Zhengguo Canal and also have a strict budget for the construction of Zhengguo Canal, which facilitates Zhang Hua to coordinate resources.

Zhang Hua attached great importance to arithmetic and required all departments, counties and towns to prepare budgets, and compared the actual fiscal revenue and expenditure and budget differences, analyze the reasons, and hold all departments and officials accountable.

Zhang Hua, who came from later generations, knew the importance of arithmetic, so he emphasized the proportion of arithmetic in the imperial examinations.

"It's good."
Chapter completed!