In 195 AD, for a whole year, Gongsun Kang spent the whole year patrolling around, preparing for war.

The first is the city walls. The original walls were basically earthen walls. Now the sides and tops are heightened and thickened with red bricks and large bluestone. The role of cement here is to act as a binder.

It was originally a flat city wall, but now it has also been added with a horse face wall. No matter which angle you climb the wall, you will be hit by arrows from both sides.

The walls were filled with rolling wood and stones, and there were many bed crossbows. The warehouses in each city have a large number of clay pots of fire oil and catapults.

The people of all counties mobilized and worked together to complete the war readiness of the entire Qingzhou and Xuzhou in just one year.

Gongsun Kang's propaganda slogan is: If you don't want to be killed by Cao Jun, if you don't want to be eaten by Cao Jun. Let's build the walls together.

The young adults of Qingxu and Xuzhou were also intensively trained to train the skills of defending the city and logistics. Although the people complain a little, compared to life, hard work and fatigue are nothing. From this point of view, Cao Cao can be regarded as a great help to Gongsun Kang.

Because the training was carried out during the slack time, it did not affect the agriculture of Qingxu Erzhou, and there was still a bumper harvest during the autumn harvest, which increased the guarantee of grain for next year's battle.

The moat has also been deepened and widened, and if Cao Cao wants to fill in the moat, he will have to pay a price.

Referring to the river, Gongsun Kang remembered the allusion of the flooding of Xiapi City.

Xiapi is low-lying and surrounded by the Yi River and the Si River. As long as the water of the Yi River and the Si River is diverted to irrigate the city, the city of Xiapi will collapse.

Gongsun Kang decided to use this strategy in reverse, so he ordered the ordinary people to be evacuated to Donghai County first, and turned Xiapi City into a military city with only troops. Then there are many small wooden boats hidden in the houses in the city.

When the time came, Cao Cao garrisoned outside the city, before he moved to the high ground, he blocked the four gates of Xiapi City, and led the water of the Yi River and the Si River to irrigate the city, and the first to flood was Cao Cao outside the city.

For this purpose, the walls of Xiapi City were built higher and thicker, six zhang high. In the houses next to the city gate, cement and masonry were prepared, and it was planned that as soon as Cao Cao arrived, he would block the city gate.

Urn cities were also built inside the four city gates, which can be regarded as double protection.

The Yi River and the Si River also sent systematic armor soldiers in advance to find the section of the river that was close to Xiapi City and easy to break. Dig up the location where the explosives will be planted in advance. When Cao Cao came to the vicinity of Xiapi City, he planted explosives inside, and when the time came, only a few people could ignite the explosives and blow up the river embankment. For this purpose, Gongsun Kang arranged three system armor soldiers to settle down on the banks of the Yi River and the Si River, and lived by the river half a year in advance as a fisherman, and caught fish every day to sell in the market town.

At the beginning of the second year of Xingping (195), Li Dao, Guo Yan, Fan Chou, Zhang Ji and others captured Chang'an (now northwest of Xi'an, Shaanxi). They were fighting each other.

In July of the second year of Xingping (195), the emperor returned to Luoyang. Luoyang by Dong Zhuo's rebellion, has become a ruin, the emperor lives in the newly repaired South Palace Yang An Palace, all officials have no residence, "thorns, according to the wall". When the county tribute was not served, Luoyang was short of grain, the county ministers were hungry, or there were people who died of starvation. The monarch and the ministers were in a very difficult situation.

These two things are considered major events that happened in 195, but they have nothing to do with Liaodong or Gongsun Kang.

Gongsun Kang did not mean to welcome Emperor Xian of the Han Dynasty at all, the so-called "coercion of the Son of Heaven to order the princes", it also depends on who the princes are. Gongsun Kang didn't think that he had taken Emperor Xian of Han hostage, so he could let Cao Cao, Yuan Shao, and Yuan Shu obey orders.

Except for these three princes, the other princes are cannon fodder and will perish sooner or later. Nothing good will come from them.

Instead of spending time fighting with Emperor Han Xian, it is better to develop the territory and make your war strength go further. The so-called righteousness and reputation are far less direct and refreshing than fists and Xiangyang iron knives.

In all dynasties, the world won through years of war is far longer and easier to rule than the world obtained by intrigue and trickery such as "Zen Rang". It is because the successive wars have destroyed all the old order and the old forces. A blank sheet of paper can be used to create a completely new political and economic system.

In the past few years, Gongsun Kang fought a lot of battles. Each battle has a clear purpose, with a delightful capture and loot.

The upcoming battle to defend Qingxu will not be beneficial. Even if he keeps his own turf, it is a turf that has been smashed. No matter how many enemies are killed, it is also a cannibalism between the Han people.

As soon as he thought of this, Gongsun Kang felt a little angry in his heart. The eyelids of the princes of all walks of life are too shallow, just staring at the territory of the Central Plains, they don't know how big this world is, and they won't send hundreds of thousands of soldiers and horses to the outside world to expand their territory.

Gritting his teeth, Gongsun Kang decided to write a book on world geography, no matter how shocking it was, but also to let these frogs at the bottom of the well in the Central Plains understand how big the world is.

He plans to introduce the geography, natural environment, customs, specialties, minerals and so on around the world. With sweet potatoes, potatoes, corn, silver, gold, and diamonds, these things were used to attract the attention of the princes, to guide their greed, and to raise up the idea of developing and conquering.

Of course, the specialties and mineral deposits of the Central Plains will not be written, and now these places are not Gongsun Kang's territory, so there is no need to tell them: there is gold buried in the ground of your house. Gongsun Kang is not a living Lei Feng.

The territory of Liaodong will not be written, there is no need to tell the princes: My family has more gold underground, isn't that looking for a fight? Therefore, the territories of Samhan, Wado, and Goguryeo will not be written. If there are good things in these places, you can know for yourself, and there is no need to spread them around.

Therefore, the book "World Geography" is the geography of the area other than the territory occupied by the Han people.

For this book, Gongsun Kang took Cai Wenji to his side and served as his secretary, dictating some chapters every day, which Cai Wenji wrote and polished.

Cai Wenji couldn't rest assured that her son was gone, so she brought Qingzhou. The little guy is very quiet, a bit like Cai Wenji's character. Gongsun Kang cleanses and nourishes the meridians with internal qi every day, and it is estimated that he can become a wise general in the future.

Every day, Gongsun Kang has something to do as a secretary, and he has nothing to do as a secretary. Life is very happy.

The other wives and concubines didn't want Cai Wenji to be beautiful, so they all came to Qingzhou by boat one after another. Gongsun Kang was a little embarrassed, how could there be the atmosphere before the war.

In addition, Cai Wenji also has a lot of information to find and check; These materials are all in Cai Yong's collection.

So Gongsun Kang simply returned to Liaodong with his wives and concubines. Liaodong is currently the only three happy lands of the Han Dynasty, peaceful, tranquil, rich, and free from war. The other two pieces of paradise are Jingzhou and Shudi, where there is no war, but only for the time being.