Chapter 124
The eight major Ming Dynasties that entered the Iron Age in the Bronze Age were papermaking, gunpowder, cloth, kerosene lamps, dyes, magnifying glass, military, and urban architecture.
Apart from this, naturally there are more developments hidden in this period.
For example, the concepts of zero and negative numbers were also put forward by humans for the first time in this process.
As early as thousands of years ago, the ancestors of human beings found that they could not make perfect exchanges for every transaction when they were trading some goods.
There will always be some difference.
So zero and negative numbers were born.
But for modern humans, this concept is understood by even a few years old.
Therefore, it was not included in the Eight Great Ming Dynasty.
After a little consideration, Tang Zheng decided to make paper as his first choice.
The main reason is that the modern roll paper he exchanged last time is no longer enough, and the roll paper is a random material for some players, and it has been used up now.
You can't continue to wipe your butt with leaves.
Of course, the priority of making paper is also Tang Zheng's consideration of the current market.
As the saying goes, what are you thinking about?
As long as paper is manufactured, there must be a market!
Tang Zheng has all thoughts about the lines for sale.
We don’t produce paper, we just want to give every cow a home!
Chapter 68 The Origin of Paper The second recruitment [third more]
Paper
As one of the greatest inventions in human history, paper The birth spans almost the entire human luminous realm.
Please make 10,000 copies of paper and record your adventures. I believe someone will like to read it!
I looked at the brief description of the branch line and the task requirements.
Making 10,000 copies of paper, the specification requires at least 10 or more, even if it is effective.
It can be clearly felt that the side missions after entering the Bronze Age have become more difficult.
Before, of materials was enough, but now it costs 10,000 copies.
But this thing about paper, as long as one sheet can be produced, 10,000 sheets are nothing difficult.
The difficulty lies in the production process.
Many people know that paper is made of trees.
But how do you connect the trees that seem to be impossible to beat with paper?
This belongs to the wisdom of ancient humans.
The primordial human ancestors of Ancient Era used straw knots to count.
I caught a few pigs today, and I caught a few rabbits tomorrow. They were perfectly clear for you.
Whoever grabs more, eats legs.
But with the deepening of the concept of mathematics, ordinary straw knots can no longer meet the needs of humans for counting.
For example.
Zhang San's father died violently. Zhang San invited all the people who had fallen to the house to have a meal and eat the wild boar that he caught yesterday.
But there are more than two hundred people in the entire tribe. Make sure that everyone can get the fragrant pork. Everyone has a sweet and sweet smell. So the wild boar will be divided into more than two hundred pieces.
He chopped a wild boar with more than a hundred knives, and was called away temporarily when something happened, so he ordered his son Li Si to continue the chop.
When the tribe was born, the human language was not perfect.
Zhang Sanyiyiyaya pointed to the straw rope knot on the table and told his son in body language that your father I had cut more than a hundred knives. You can count the straw rope knot.
So Li Si began to count.
Oh, 108 dollars have been cut so far.
After finishing the work, Li Si continued to chop, chop, tie a knot, chop, and tie another knot.
After cutting more than fifty knives, I was also called away for something, and let my wife Wang Wulai do the knives again.
Wang Wu also has to count the knots from the beginning.
When Zhang San came back from his busy schedule, his daughter-in-law was still counting the knots, but the pork hadn't been chopped, and he was immediately angry.
This is too slow!
Aren't you delaying everyone to eat?
Just bury it with you!
So Zhang San mentioned the evil kitchen knife, and the cold blade flashed with the cold glow of impunity.
It can be seen that straw rope knots have limitations on human communication.
Even if the decimal and hundred-based straw knots appeared later, the efficiency was still very low.
Moreover, it is difficult to express a clearer meaning just as a knot.
So, with the evolution of Ming Dynasty, the count from the knots of straw ropes was changed to the simple number symbols written on the sand.
You can write by hand, which is simple and convenient.
You have time to tie a knot, others have already drawn a "1" in the sand
But soon, human language is constantly improving, and more and more The symbol was invented, representing many meanings.
With more symbols, some complicated patterns will appear.
The primordial Old Ancestor took a lot of hard work and drew a twisted pattern.
Suddenly, there was a wind
This was embarrassing.