New Year's Day, the first of the year. In the ancestral hall of the Cao family, Cao Cao led a group of descendants to bow to the ancestors.

There are two ancestral tablets enshrined in the ancestral hall, the middle is Cao Teng's position, and the right is Cao Song's position.

It looked shabby, but Cao Cao, who was in front of everyone, bowed very seriously. The Han Dynasty ruled the country with filial piety, and Cao Teng, as the ancestor of Cao Cao, even if he was just raising an ancestor, he could not tolerate the slightest sloppiness.

Cao Bin in the crowd looked at the ancestral tablet above, thinking of the discussion of Cao Cao's life experience in later generations.

The Book of the Continuation of the Han Dynasty records: Cao Jie gave birth to Cao Teng, Cao Teng adopted Cao Song, and Cao Song gave birth to Cao Cao. But Cao Cao's grandfather, Cao Teng, has been a eunuch since he was a child, how could a eunuch have a son?

So, who is Cao Song? "Wei and Jin Shiyu" records: Cao Song's original surname is Xiahou, Xiahou's uncle.

Therefore, in terms of blood, Cao Cao's original surname is Xiahou. It is no wonder that at the beginning of Cao Wei's establishment, the military generals were ranked first by the Xiahoudun and Xiahouyuan brothers.

So, why didn't Cao Cao change his surname back to Xiahou? But because Cao Teng's name is too big, Lao Cao needs such political influence.

Cao Teng stayed in the palace for 30 years, served four emperors successively, and overthrew the powerful Liang Ji, supported Emperor Huan to ascend the throne, and even made a marquis for this merit.

When Cao Pi was called emperor in the future, he posthumously respected his father Cao Cao as Emperor Taizuwu, and posthumously honored his grandfather Cao Song as Emperor Tai.

Why didn't you chase Cao Teng? But it was because Cao Pi was afraid that others would scold him for being a 'descendant of eunuchs' and a 'eunuch who was ugly'.

"It's not good to throw people aside when they're done using it!" Cao Bin shook his head, wrote down the matter, and bowed earnestly with everyone.

After tossing for a long time, the Cao clan's New Year's Day ancestor worship finally came to an end. Subsequently, Cao Bin left directly, ignoring the uncles around him.

In front of the crowd, Cao Cao looked at his distant figure, and stopped talking. He really wanted to ask Cao Bin what was going on with the various systems and measures he saw in Cao Pi's future life after simulating it last night.

But after thinking about it, he was about to go to the palace and hold a court meeting with Emperor Han.

"That's it, even if you ask Bin'er, he may not know, and he can only find out through simulation next time." Thinking of this, Cao Cao didn't stop, and after a few words, he went straight to the palace.

... After returning to the barracks, Cao Bin inspected the camp. Seeing that the soldiers were training as usual and did not slack off, he returned to his barracks.

Although he ate and lived together and trained with the soldiers, how could he really train every day?

Just run drills with the soldiers every morning, run five laps around the camp, and teach them lessons in the evening.

As for other things, he has already handed over the coordination to Zhang Long, and the daily training of the fifth song has been handed over to Deng Gouwa.

I have to say that Deng Gouwa's military talent is very amazing, and it may really be Deng Ai in the future.

"Huh, it's been fourteen years since Jian'an, and the battle of Nanjun is about to break out at the end of the year, so there's no time to wait for me!"

"I don't have time to waste on such trivial things as daily training, I have to get the bomb out quickly." Back in the barracks, Cao Bin breathed a sigh of relief and said silently.

His barracks were large, and in addition to a hall where mid-level officers were summoned, there were sleeping quarters at the back, as well as a study and a utility room.

I have been tinkering with black powder for more than half a month, and I have basically figured out the recipe and have been able to successfully prepare it.

The point is, how to make it into a bomb! There is only black powder, which is just a bunch of flammable products, but it cannot exert its due power.

Only by making it into a bomb can it be used to injure and kill the enemy!

"I knew that I would cross, why did I have to memorize the three great divine books of the traverser!" When he came to the utility room, looking at the black powder that had been prepared with a lot of effort, Cao Bin didn't know how to start.

As one of the five good citizens of the 21st century, he was neither a science student nor a soldier, and he did not know how to make bombs.

The specific reasons are understandable, so I won't go into details. As for the three books of the traverser, they are the "Barefoot Doctor's Manual", "Militia Training Manual" and "Friends of Military and Civilian Talents".

The "Barefoot Doctor's Handbook" can train a person without any medical knowledge and experience into a preliminarily qualified doctor in the shortest possible time, and it is not too much to say that it is a crash course for doctors.

The "Militia Training Manual" uses a hand-in-hand approach to train a group of people with no military experience into soldiers with considerable combat effectiveness in the shortest possible time.

The last book, "Friends of Military and Civilian Talents", is amazing, and compared to the first two books, this book is more like a hodgepodge.

The editors at first got the bibliography wrong: the first chapter was still teaching how to jerk off correctly, and the latter chapter suddenly taught how to do a good job of postpartum care for sows; When you finally learn how to care for your sows, the next chapter begins to teach you how to build a house and dig a ditch; I finally felt that I could become a civil engineer, and the next chapter changed my style to how to become a qualified accountant...... As the name suggests, "Friends of Dual-Use Talents" teaches people how to transform from a soldier to an ordinary person with skills.

The contents of the book may seem cluttered, but most of the content is still some craft that can make a living.

If you memorize the contents of these three divine books, no matter which dynasty you travel to, even if it is the primitive tribe era, you can retreat and settle down, and you can compete in the world.

"That's it, since I didn't prepare in advance, I had to figure it out on my own." Scratching his head, Cao Bin grimaced and began to think about how to make a bomb.

Recalling the memories of his past life from time to time in his mind, Cao Bin suddenly thought of the firecrackers he had played with when he was a child.

"Hey, firecrackers... That's right... Firecrackers are the same as bombs! ”

"Put gunpowder in a sealed container and leave a fuse, and it becomes a firecracker, which is a primary version of a bomb."

"As long as the fuse is ignited, after three to five seconds, the gunpowder inside is ignited, and there is not enough space in the container, it will cause an explosion."

"In this case, if I only need to make an oversized firecracker, isn't it a bomb?" Two kicks, hemp thunder, earth red, throwing cannons... These are very old memories.

Since the beginning of a certain year, the world has banned firecrackers, and I have never seen firecrackers and fireworks again, let alone set off firecrackers.

"Yes, yes, that's it, I'll make firecrackers first, and then slowly improve it until the bomb is completely formed!" Thinking of this, the principle of firecrackers appeared in Cao Bin's mind, and a smile appeared on the corner of his mouth.

Soon, he took some of the ingredients out of the utility room and went outside the camp to tinker with them, trying his hand at making firecrackers.