"Don't be in a hurry to shout immortals, what I mean by fifty li refers to the east-west position, and the north-south words do not exceed thirty li. If you are proficient in learning, ten miles will not be a problem. ”

Hong Tao is quite modest, and his practical sextant measures the north-south latitude, and with the help of nautical charts, the position can be accurate to within a few kilometers. The error between east and west will be larger, but it will not reach fifty miles.

This is Hong Tao's cunning, he doesn't want to teach others all at once. Aren't the ancients cloudy, and the disciples of the church starved to death of the master, this sentence is not unreasonable. You can't have the heart of harming people, and when you come to Hongtao, you must have the heart of harming people, and the heart of preventing people is getting stronger every day.

"There is no basis for words!" The crown didn't believe it, but it was a little vague when he saw that the colt was so sure.

"This is really a big trouble, I can't leave Beijing without the Holy Decree...... Let's wait, maybe there will be a chance soon, and you will understand when the time comes to show it on the Yellow River. ”

This problem really stumped Hong Tao, and it was more accurate to use a sextant to measure on land. But I can't leave here, and others won't use it, this thing can't be learned in a few days, it requires a lot of geometric knowledge to calculate, and it seems that this idle move will have to wait for a while to play.

"Official, Chen Niang wants to learn, in the future, Chen Niang can take the official home to see Niang Niang......"

What the colt said was indeed a problem, and the crown could not solve it, so he could only sigh. But Chenniang seems to have made a big gain, and she won't let go of Hong Tao's sleeve.

"Okay, good, the official will teach you, let's go back to learn. Brother Wang, let Zhou Jiaban get the dragon boat first, it's not a precious object, they have no problem. After the oars and oars are loaded, I will send someone to the house to call me, the little girl is also hungry, we have to go back to the house for lunch, and you don't care about food here. ”

Chen Niang's request really reminded Hong Tao that he didn't have nothing to do, but that there were too many things to do. For example, first make a sextant out, and by the way, find out if there are natural crystals with high purity, and grind a few sets of lenses to make a telescope to play.

These two things alone are enough to toss for a long time, not to mention the big killer of the wheeled compound bow. Even if there are no baleen available, it should be possible to transplant the pulley set to the recurve compound bow at this time. With the assistance of the pulley group, it can not only increase the accuracy of the bow and crossbow, but also increase the muzzle velocity appropriately, which is very helpful for armor-piercing ability.

In fact, the main thing is not to increase the power of the bow and arrows, but to reduce the difficulty of opening the bow and shooting arrows, and the eccentric wheel of the pulley block will play a role in storing energy when the bow is full.

In the vernacular, it is a bow equipped with a pulley group, and you can use as much force as you need when drawing the bow, and a bow with one stone will never be full with only eight buckets of strength.

However, after the full pull, there is no need to maintain the strength of one stone, which allows the archer to be more comfortable and stay longer, and also makes it easier for the archer to train.

The archers who had barely been able to pull out a one-stone bow before would certainly not have needed a one-stone bow, but with the help of a pulley set, he was able to use a one-stone bow, and it was not barely enough.

Don't underestimate such a small change, a small reduction in the standard could add thousands of qualified archers to the forbidden army.

The forbidden army of the Song Dynasty lacked cavalry, so it could only use infantry to line up and cavalry to fight hard, relying on long-range weapons such as bows and crossbows, and the quantity and quality of archers were crucial to the combat effectiveness of the forbidden army.

"Alas, I have to stutter a thousand dishes and ten thousand meals, and I can't rush it! You must not die before you get out of the school, and the hero will be full of tears. Even if you become a hero, you are not judged by later generations, and it is common to carry a black pot. It seems that the crown can't be thrown here, it's better to have a way out than nothing, and it's really not bad to go to Chen's mother's house to mix with Master Bayi. ”

In fact, Hong Tao really wanted to move the system of the Jinhe Empire over, and it didn't take much to get a formed musket team within five years. Regardless of whether it is a front-loading gun or a rear-loading gun, with the cooperation of a part of the cavalry and logistics troops, there will definitely be no problem in fighting two large-scale decoy and annihilation battles.

Once the Song army captured the sixteen states of Youyun, relying on the convenient terrain, it would not be so easy for the Liao army to fight back. The relatively rudimentary hot weapon attack may not be particularly strong, but when it comes to defensive operations in favorable terrain, it is useless to have any cavalry coming.

As for Western Xia, as long as the battle line in the north is stabilized, the further the war drags on, the more beneficial it will be to the Great Song Dynasty.

This is not counting the navy, if there is a marine corps equipped with horses and muskets into the Bohai Bay area, the elusive, siege and plunder, burn and loot, even if the Liao State is in a hurry, it will not have the strength to invade the south, and whether the hometown can prevent it is a problem.

It's a pity that this kind of thinking can only be thought about, no matter how powerful a weapon is, it has to be used by people, and it must be used correctly.

The premise of industrialization is that the superstructure must be ideologically unified, and that thing is much more thorough and stinging than Wang Anshi's reform.

With the current level of understanding of these people in the Great Song court, I am afraid that the emerging bourgeoisie will not be allowed to grow, and it is bound to be another dragon and tiger fight. If you can't even settle down in your own home, how can you talk about expanding your territory? It seems that Zhao Pu is right, if you go outside, you have to settle down first.

"The official also wants to go to Chen Niang's house? When Chenniang grows up and learns her skills, she will buy a big boat and take Mama, Sister Lian'er, the eldest princess, and Mr. Xu home together, okay? ”

Chen Niang still doesn't quite understand what a hero is, and she doesn't understand why officials don't want to be heroes. But the word "home" has always been her heart disease, and every touch makes her heart surge.

"Well, Chen Niang, learn your skills hard and grow up quickly. When you all grow up, I won't have to be so nervous. ”

Every time he hears Chen Niang's request to go home, Hong Tao can't help but think, could it be that Jews really have this kind of talent? No matter where you go, you can't forget that hometown that only exists in legends?

If not, how could Chen Niang be like this? None of the other children in the house ever mentioned their hometown, at most they shouted at their mothers when they felt wronged, or simply remembered their families in their sleep.

After returning to the Horse Mansion, Hong Tao still had nothing to do, because it was about to be the Shangyuan Festival, and all the craftsmen went home for reunion.

Without their assistance, all Hong Tao's whimsical ideas could only stay on paper, even if he had strong hands-on ability, he would not be able to make a fart in ancient times without any modern tools.

No, it's not like he can't make a fart, he took out the small can of alcohol that he got out a few days ago, and hid in the study for a long time to tinker with it.

When I was sleeping at night, all kinds of strange noises suddenly came from the princess's room, and even Chen Niang, who had never spoken much, was giggling. If you enter the house at this time, you will smell a strong aroma of osmanthus, which tastes a bit like incense, but it feels much stronger than incense.