Chen Jin is now idle in Xiangyang and has nothing to do, basically commuting to work step by step every day, but this is not what Chen Jin wants, although it seems that the world is peaceful now, but it is really a river of blood when the fight starts, and Liu Bei wants to win with an overwhelming advantage, then it must develop and develop, and leave Wei and Wu far behind.

Then, the first thing that Chen Jin thought of was China's four great inventions, each of which had a profound impact on later generations. In particular, papermaking and printing can also be used together. These two things Liu Bei is a sharp weapon whether it is used to develop culture or win people's hearts. Papermaking and printing are relatively simple, but they are very important, so they must be handed over to trustworthy people, and when it comes to trustworthy and capable people, Chen Jin really couldn't think of it for a while, so Chen Jin had to write down papermaking and printing and hand it to Guan Yu to see if he had a suitable candidate.

There is still gunpowder left, although Chen Jin doesn't remember the formula, but he still has a little impression of what is vague, this gunpowder was originally a product accidentally left by Taoist priests when refining pills, Chen Jin thought about whether he was looking for some Taoist priests to come and let them practice again. However, Chen Jin immediately stopped this idea, if he really got the gunpowder out during the alchemy, if he didn't pay attention, he wouldn't have to kill some people. However, the Taoist priest still has to look for it, and Chen Jin can look at their Dan recipe on what visions they had when they were refining the pill, and see if they can find out anything from it.

The remaining one is the compass, but it doesn't seem to be useful now, but this is very useful when marching and sailing, so this compass must be there.

Things have to be done one by one, the first thing is to invent paper, Chen Jin wrote a charter and handed it to Guan Yu, saying that Liu Bei is not here, Guan Yu is the head of this.

After the charter was handed over, Chen Jin didn't care about this matter, and the next thing was printing, this is not just a casual thing, just engrave the reverse words on it. This printing is also a technical job, which should consider the size of the printing, the handwriting display, and the cost of the problem. Chen Jin thought about it and felt that it was more reliable to hand over this matter to Ma Jun, so Chen Jin invited Ma Jun over and told Ma Jun about the printing problem, and Ma Jun immediately agreed.

These two things have been arranged, Chen Jin finally felt a little comforted in his heart, surpassing Wei and Shu, let's start with these two great inventions.

Not long after Ma Jun left, Guan Yu immediately came in a hurry, and there was a dense layer of sweat on his forehead, and his face, which was originally very red, now looked even redder.

"Anji, you, you really, really ......" Guan Yu couldn't even speak now, mainly because he was too excited.

I think he Guan Yu is also in his fifties now, he is already in the year of knowing the destiny of heaven, he has not experienced any winds and waves, and the reason why he is out of shape today is that Chen Jin's charter is really unusual.

Guan Yu is not a wealthy family, so he naturally understands the importance of paper, especially for the poor. Most of the books now exist in the form of bamboo slips, with few written records, heavy books, not easy to carry, and the cost is very high.

Guan Yu really didn't know what kind of impact papermaking would have on the world after it was born, but Chen Jin's impact on the world was far more than that.