The only help for the original Red Cannon aiming was the gunner's ruler. It was something similar to a ruler, with scales engraved on it one by one, and the amplitude of the cannon was adjusted according to the distance.

If you want to aim accurately, unless you are an experienced old gunner, you will have no accuracy. Even an old gunner can hit it once ten times.

In Yizhou City, Zhu Cilang's flowering bullet was able to hit the target, which was a lucky component.

When firing, the bottom scale of the gunner's ruler is aimed at the muzzle ring, and then aims at the target and keeps firing. During the firing process, find the range to hit the target.

In other words, when you hit a fixed target, you can only hit it through continuous attempts. If you hit a moving target, it is purely a blind eye. It’s okay to say that the closer the distance is, the worse the accuracy is.

Later, the accuracy was greatly increased with the gun plaque. The use of gun plaques is also determined by whether you use lead or iron plaques. Different materials are different, and the aiming of shooting is also different.

Based on the gun rules, Zhu Cilang explained the principle of triangular elevation measurement to Johnson Chan, which greatly improved the accuracy of cannon distance measurement.

In the era when the rangefinder was backward, many experienced old gunners simply threw away the rangefinder. They used the eye sprinting method to easily measure the distance. First, straighten the arm forward, close one of the left eye with your thumb upright, and then aim the right eye to the left side of the target along the side of the thumb, keep the head and hands still, then close the right eye to make the left eye gaze pass through the same side of the thumb, and remember to aim the line of sight at a point in the field, and then visually measure the width from the left side of the target to the point, and about ten times the width is the distance from the standing person to the target.

The principle of eye sprinting method is that the distance between the pupils of a person's eyes is about one tenth of the length of his arm. If you measure ten times the width of the object in the field, you will get the distance from the standing point to the target.

Zhu Cilang told Johnson Tang that the principle of triangular elevation measurement can completely enable a novice to skillfully manipulate the cannon.

The two of them carefully discussed and studied them from muskets, cannons, sighting equipment, and the best proportion formula of gunpowder. The more they talked about it, the more shocked Joshua Than Than, how did this magical prince know so much theoretical knowledge?

Moreover, his rich knowledge made Joshua Chan look like a primary school student in front of him.

Wangcai came out of the private room and kicked Meng Fanchao who was sitting on the ground and was drowsy: "Old Meng, wake up."

Meng Fanchao suddenly shuddered and got up. The first reaction that came to mind was to touch the weapon on his waist. After waking up, he saw that it was Wangcai, so he asked dizzyly again: "What's the matter?"

Wangcai sniffed: "I look a little weird when the scholar below, please pay attention."

Meng Fanchao then raised his head and saw a down-and-out scholar sitting downstairs drinking and drinking. Beside him was the prince of the Ming Dynasty, who was in the future country. A scholar suddenly appeared downstairs. Meng Fanchao had to be on guard: "Let me go down and drive this person away."

Sun Wangcai stopped him: "No, Your Highness is traveling in a condom. We can't alarm the snake. Maybe, we are just a lost scholar, and we don't need to pay attention."

When the rooster crowed and dawned, Zhu Cilang and Tang Ruowang were shocked at the same time. The two of them secretly shouted: Something is not good.

After returning overnight, Zhu Cilang knew what it meant to go back. He had to return to the palace as soon as possible, before being discovered by his parents, otherwise something big would happen.

The same was true for Chau Ruowang. The two of them talked loudly all night long and had long forgotten the time. Unexpectedly, before they had talked enough, the sky was already dawn. The prince had not returned, which was a great event.

At that moment, Joshua Chan became nervous: "Your Highness, you should go back to the palace earlier and choose a date to go to the palace to pay homage to you."

Zhu Cilang nodded: "Sun Wangcai, come in and pack up your things and go home!"

When Zhu Cixuan took everyone downstairs, he happened to meet the drunk scholar downstairs. The scholar also stood up, as if he was about to check out and get up.

Meng Fanchao stood in front of Zhu Cixuan with a look of alert, fearing that the scholar would suddenly start a attack. Zhu Cixuan kicked him aside. Had this guy read too many opera novels? How could there be so many assassins?

The cultural development of the Ming Dynasty was quite prosperous, and opera novels all had unprecedented development. Among the four classics, three were from the Ming Dynasty. In opera novels, there are already many stories of flying eaves and walls, and thousands of troops taking the heads from it.

When the prince kicked aside, Meng Fanchao still did not dare to neglect and kept his nerves tense to prevent the scholar from being nervous.

The shopkeeper didn't notice it, and he walked over with the abacus: "This husband has a total of twenty-three cents."

Twenty-three folks, not much money. The scholar drank some inferior water and wine, and he didn't order any dishes. But it was these Twenty-three folks that stumped him.

The scholar touched his arms in embarrassment: "I'm really sorry. I haven't brought enough silver today. Can I owe it a little bit of credit first?"

"If you don't have money, what kind of wine do you come to eat? The shop is small and profitable, so don't take credit." The shopkeeper immediately changed his face.

At this time, Zhu Cilang usually comes forward: I gave him the money for his wine. Then he makes friends with the scholar and writes a popular story...

Well, that's because he has read too many novels. Zhu Cixuan is not so generous, and he doesn't want to get involved in this kind of thing. But he is a little curious to see what kind of dilemma he will be in when the scholar has no money next time.

"I'm really sorry for this. I didn't bring enough money." The scholar's face turned red. Obviously, he still wanted shame in front of so many people.

Perhaps it was because he saw that the other party was a scholar, and the shopkeeper sighed: "Look at you, you are also a literate person, why not take the exam for fame and fortune?"

The scholar was even more embarrassed and bowed to the shopkeeper: "I'm not sure about it. I went to Beijing for the exam this time and I went home to face the Jiangdong elders. I originally wanted to go to the moat outside the city to jump into this life after you hangover. I am really ashamed of those who have no face to live."

The shopkeeper was shocked again: "You, you, there are many scholars who land every year. According to you, it is like you have found a short-lived view. How could the moat outside the capital be filled yet?"

Perhaps he was about to die, and the scholar didn't care about being shameless: "I am different from others, and it would be fine if I failed. It was just because I was not a good person, but because I was not a part of the imperial examination."

This aroused Zhu Cixuan's interest. He bowed to the man: "Brother, for some reason, you didn't go to the imperial examination again. Was the examiner maliciously making things difficult for the examiner?"

The scholar shook his head: "No, I am really tired of a woman."

Woman? Zhu Cixuan almost laughed and screamed. He was really a nerd: "I don't know what kind of woman he is, but he was so fascinated that he ignored the major events of the Taiwan imperial examination."

The scholar not only felt ashamed, but also looked fascinated: "This woman is different from hers, her beauty is not as beautiful as the world, and she is only beautiful and stunning."

Damn, what kind of woman is so arrogant, Zhu Ciyang couldn't help but contempt: "What's her name?"

"Chen Yuanyuan."
Chapter completed!