"World Geography" was finally written after two months of work by Gongsun Kang and Cai Wenji.

Typesetting, proofreading, printing, and binding were all completed by Zhang Yong.

Nowadays, Zhang Yong paper has been sold all over the world, Zhang Yong paper is whiter, softer, tougher, easy to keep for a long time than Cai Hou paper, and the price is relatively cheaper. Therefore, it is very popular, bringing a lot of profits and new economic growth points to Liaodong.

Although Zhang Yongneng is capable of martial arts, Gongsun Kang still doesn't want him to go to the front line. After all, scientific and technological talents are rare, and if they die on the front line, it will be a loss for the Chinese!

For the first time, 10,000 copies of World Geography were printed, and the national uniform price was 10 gold per copy. Distributors around the country according to the distance, rebates are different.

This book has created many firsts in history.

The first time I used white paper to make a book, and the first time I used cotton thread to bind a book.

The first use of typography, the first use of movable type.

The first book in the world to be published in more than 10,000 copies.

In this era, there were very few professional bookstores, and most of them mainly sold pen, ink, paper, and inkstones, as well as bamboo slips and woodcut books. Therefore, this book is sold at the distributors of Xinghua Chamber of Commerce, Zhenjia Chamber of Commerce, and Mijia Chamber of Commerce.

There are all kinds of shops, some selling rice, some selling fabrics, and some selling wine. There are those who sell jewelry. Of course, it is more in the stationery store that sells pen, ink, paper and inkstone. In a conspicuous position on the shelves is the book "World Geography" co-authored by Champion Hou and Cai Wenji.

The unified pricing across the country is also the first time in the history of the sales industry.

The author of this book has two signatures: Gongsun Kang and Cai Wenji.

It's also a world first.

It was the first book co-authored and the first book signed by a woman.

Cai Wenji didn't want to sign it, but it was Gongsun Kang's insistence that led to the final result. This is also a foreshadowing laid by Gongsun Kang for the future world, equality between men and women, and the right of women to work.

From these firsts, the book is extremely collectible, and it is a book that can appear in the auction house thousands of years later. The price of 10 gold is really a conscience price.

Of course, people nowadays, scholars in the late Han Dynasty, only care about the content of the book. Those who can buy and read books are naturally scholars and officials who know how to read. And then they were shocked.

Some people are shocked that the world is so big, and our Central Plains is so small, and we only occupy a very small piece of land in the world.

Some people are shocked: it turns out that we are not the center of the world, and we are not the illegitimate children of God.

Some people were shocked that there were three large empires lurking next to us: Sabbath, Kushan, and Rome. These three populations and territories are no less than the great empires of the Han Dynasty.

Some people are also shocked that the yield of potatoes, corn, and sweet potatoes can reach 15 stone per mu, which is 5-7 times that of the existing crops in the Central Plains: millet and rice, so there is no problem in feeding the whole world with the existing land.

The last time Gongsun Kang drew pictures about potatoes, corn, and sweet potatoes for Zuo Ci, now I use them, so this book is the first illustrated book in the world.

And this is the first book in the world to have punctuation, although Gongsun Kang did not explain the meaning of those punctuation marks, but breaking the sentences so that the reader has no ambiguity is a kind of progress.

There are also people who are interested: the changing geography, such as Africa, which is free of severe cold in summers all year round; The four seasons freeze, and the North and South Poles do not melt all year round; There are so many kinds of animals, such as hippos, elephants, rhinos, penguins, polar bears.

Of course, there are even more people who covet the golden empire, the white galaxy, the diamond mines, and the place where the whole island is copper mines.

There are also people who covet black and white people, thinking that who can catch some female slaves, and I will buy them for as much as I want, which is also a curiosity.

Gongsun Kang is most concerned about: What is the reaction of the princes from all walks of life when they see this book?

Cao Cao, Yuan Shu, and Yuan Shao's attitudes are surprisingly consistent: I don't care how big this world is, I will first unify the territory of the Han Dynasty. As for outward exploration, that's my son grandson's business! If you go outside, you must first settle inside!

It can be said that Gongsun Kang's original intention of writing this book was completely unrealized. Princes from all walks of life: those who have no ambition continue to be drunk and dream of death, guarding their own one-third of an acre; Ambitious, continue the civil war! The world of the Outlands is unknown and terrifying, while the Civil War is an insider and can be controlled.

It is still Gongsun Kang who is too young. Speaking of which, several counties in Bingzhou, such as Jiuyuan County, were occupied by Xianbei and the Huns, whether it was Yuan Shao or Cao Cao, they all ruled and merged with the state, and they did not see Yuan Shao and Cao Cao go to raise troops to retrieve it, you must know that Jiuyuan County was originally the land of the Han family! Lü Bu was born there. Then can you still expect Yuan Shao and Cao Cao to take the initiative to attack Anxi, Guishuang?

However, Bing Yuan and Cai Yong, the great Confucians of Liaodong, came to the door every day to discuss the authenticity of this book with Gongsun Kang. They still believe that the sky is round and China is the center of the world.

Fortunately, Gongsun Kang has not yet written: the earth is round, such a shocking statement. But now he was also annoyed, and simply said to these great Confucians: "You should treat this book as a strange novel, just when I wrote a 'Classic of Mountains and Seas'." ”

For his unrigorous attitude towards studying, Cai Yong criticized him very seriously. His own teacher, or father-in-law, Gongsun Kang can only swallow tears in his stomach, what else can he say?

However, Cai Wenji stood up and said a few fair words, she said: "It is too far away to verify, but the Great Food, Body Poison, Persia, Rome, etc., can still be found in your collection of books, which are completely consistent with my husband's writings." ”

All Gongsun Kang can say is: "Let's put aside the controversy and leave these verifications to future generations." ”。