From spring to winter, three years is a relatively long time for the limited life of human beings.

Three years seems like a moment for this world, and most of this world has not changed much from three years ago.

But for the country of Qi, which has made great efforts to develop, the great changes make people feel like a world away.

In the past three years, Qi has preliminarily completed the paving of roads, and the major cities in the territory have been connected by smooth stone roads.

Even the more remote villages have taken the trail to the nearby county seat.

The dam was only completed at the end of the fourth year of Hongwu, a huge project that took nearly a year, and cost a lot of manpower and material resources to Qi State.

This is a great project, and during the construction of this dam, Qi used clay cement for the first time.

The investment of new materials has made this majestic human structure enough to go down in history.

On the day the dam was completed, Yang Hao held a ceremony to worship the heavens, the ceremony was very grand, Qi not only invited his old ally Youyou still clan to come to watch the ceremony, and even the surrounding friendly tribes also came here to witness the great masterpiece in human history.

Yang Hao named the dam Yonggu.

Shortly after the completion of the permanent embankment, after several rounds of testing, the effect was perfect as expected.

An army of 1,000 men was transferred here, shortly after the army had completed its garrison.

Near the embankment, black smoke billowed every day, and the sound of tinkling was endless.

The steady flow of water brings a steady impetus to the production of wooden machinery.

The mechanical arm drove the heavy copper hammer and rhythmically struck on the red iron ingot.

Pieces of wrought iron of about the same size were stacked together like dyed bricks.

When the first piece of steel was forged, it marked the official entry of the Qi State into the Iron Age.

The appearance of iron tools was soon put into the court and people of the Qi State.

Unlike scarce copper ore, iron ore veins are much more abundant than copper ore.

In the fifth year of Hongwu, the official Qi State no longer produced bronze tools and weapons, and the limited copper was all used to make Qi money.

With the popularization of iron tools, the productivity of Qi has once again made a qualitative leap, and large areas of jungle in major cities have been cut down and turned into farmland on which the people of Qi rely for their livelihood.

The increase in cultivated land, coupled with the new crops brought in from the south, greatly enriched the materials of Daqi.

Moreover, there is Yang Hao in the state of Qi, and the political clarity from top to bottom has made the national strength of the state of Qi increase day by day.

At the end of the fifth year of Hongwu, the first population census was conducted in the state of Qi.

According to the rough figures, there are more than 600,000 Chinese people registered in the official palace of Qi State.

As for the people of other tribes, labor prisoners and savages, they are not within the scope of Qi statistics, if you count these people, until the end of the fifth year of Hongwu, the number of human beings in Qi has been conservatively estimated to have exceeded one million.

This million people may not be as many as a city in the later generations, and if they are scattered within the territory of Qi State, they will also appear to be vast and sparsely populated.

But this amount, in the Central Plains of this matter, is a well-deserved giant.

And Chang'an City, as the capital of Qi State, has reached an unprecedented scale of 100,000.

In the past few years, Chang'an City has undergone several expansions, and now it can be called the first male city in the world.

All the foreign envoys who came to Chang'an City were shocked by the majestic Chang'an City.

On the other hand, the strength of the Qi State has far exceeded their cognition.

This made them not dare to have any idea of resisting at all.

In the face of a behemoth like Qi Guo, any misdeeds are no different from suicide.

But even so, there are still some tribes who are not afraid of the strength of the Qi State.

At the beginning of the fifth year of Hongwu, Yu was annexed and completely became a part of the Qi State.

However, the Shang tribe, located in the west of Youyu, coveted the wealth of Youyu, and when Rong came to Chang'an City to accept Yang Hao's canonization, he brazenly led the army to attack Youyu.

The sudden attack caused heavy losses to the unprepared.

Yang Hao, who heard the news, was furious, seeing that the first three-year plan was about to be completed in a peaceful way, and at this time, these people dared to jump out and make trouble for themselves.

How could he bear this, Yang Hao immediately ordered that within three days after receiving the Qi State Tong Plate, the restricted merchant tribe would immediately release the captured Youyu tribesmen and hand over their leaders, if the time limit was exceeded, as soon as the Qi army arrived, all the merchants and nobles would be killed, and all the ordinary clansmen would be reduced to prisoners and never released.

What is the identity of the prisoners of the Qi country, the entire land of Middle-earth is clear, in the Qi country where there are no slaves, these people are slaves with different names.

The merchant tribe who received the pass was panicked, and a day later, the southern border army of Qi was assembled, and the merchant panicked.

Soon there was an internal strife between the capitulation faction and the main battle faction, and in the chaos, the merchant leader was killed, and the main battle faction fled westward.

The remaining merchants, with the heads of their leaders, disarmed and surrendered as soon as the thousands of Qi troops arrived.

Even so, Yang Hao did not calm his anger, and under a holy decree, the entire merchant clan was sentenced to ten years of criminal law for the crime committed, and no one was pardoned.

And issued a document, for those merchants who fled, which tribe dared to take them in, it was the mortal enemy of the Qi State, so wait to accept the wrath of the Qi State.

In the face of the threat of the Qi State, who dared to take in these exiled merchants, so far the Shang tribe was completely wiped out.

This tribe, which influenced the direction of Chinese civilization in another time and space, completely became a passer-by of the ancient tribe under the blow of Yang Hao, without causing a trace of waves.

The demise of the merchants made those forces gathered under Xia Chaoyu panic.

The Xia Dynasty has also been developing in recent years, but compared to its powerful neighbors to the east, the Xia Dynasty's power has not made them feel any sense of security at all.

Although the Qi State has launched such a war in the past few years, the existence of the Qi State is like a sharp sword hanging over the heads of these people, and maybe one day they will die under this sharp sword.

Faced with the threat of the Qi State, Xia Qi secretly formed an alliance with the poor clan who had regained their strength, preparing to destroy this henchman in one fell swoop.

Although the rich Qi country is terrifying, as long as it is destroyed, the flower world of the Qi country is theirs, and the wealth is in danger, in the face of such a temptation, how can the concubine and Xia Qi not be moved.

It's just that Yang Hao didn't care about what Xia Qi was doing at all, and after stockpiling enough food, Qi State expanded its army again in the autumn of the fifth year of Hongwu.

This expansion of the army has increased the army of Qi to 40,000 people, and the ministers with a keen sense of smell know from Yang Hao's actions that the three-year peace of Qi is coming to an end.