Macaulay was in such a hurry to send Polly, it seems that the pressure from the Hell Lord King on the fallen angels is too great.

However, Da Liang doesn't have the time or strength to explore the sewers of Shangjiang City now, and everything needs to be decided after meeting Divine Bella tonight.

Da Liang said to Polly: "It will take a while to enter the sewers, and I will look for you after I have set the personnel down." ”

Polly nodded and said mysteriously, "What are you doing in the sewers?" I actually want to go to the third layer, and the monsters on the second layer can kill me at any time, if it weren't for our boss saying that the holy angel would follow, I would never take you there. ”

"You don't need to know anything, and knowing more is not good for you." Da Liang was afraid that Polly would know that he was going to arrest the Hell Lord King, so he didn't dare to go, so he didn't tell him the truth, and Polly, the big mouth, couldn't keep a secret. In order to prevent Polly from continuing to ask, Da Liang changed the subject and asked, "What did your boss say about Gis...... Do you know a few of his best-kept secrets? Can you tell me? ”

"Guise isn't there, is he?"

"He's not here," Da Liang told Monica to stand guard outside the door, and said, "Tell me everything you know." ”

After Monica went out to control the wind, Polly said: "Actually, this secret is not a secret, Polly used to be a pirate, to be precise, he was a ship designer who served pirates. The pirate ships he rebuilt were very good, with plenty of firepower and speed, and many famous pirates liked to ask him to rebuild or repair their warships.

It's just that for some reason, Guise suddenly joined the Pudong Shipyard and became a ship designer inside.

Soon, Guise was accepted as a disciple by Master Harold, the chief designer of the Pudong Shipyard at the time, and then he was promoted to the rank of master ship designer.

Many people in Flea Street are pirates, and they are still driving the pirate ship that Gise provided for them at the beginning, so Gise is still very respected by everyone after coming to Flea Street after having a physical problem. ”

Gise is a pirate!

A surprising identity indeed.

Da Liang asked, "Do you know why Master Guise joined the Pudong Shipyard?" ”

Polly shook his head and said, "I don't know, after all, the thoughts of the undead are sometimes difficult to figure out. However, some people say that he got the treasure of the Sea Emperor, of course, this is just a rumor, if Guise got the treasure of the Sea Emperor, how could he sell ship models on Flea Street. ”

"What is the Sea Emperor's treasure?"

The treasure thing sounded very tall as soon as it sounded, and the modifier of Sea Emperor aroused Da Liang's interest even more.

"The Sea Emperor's Treasure is just a legend that has been passed down among pirates, and most people believe that this treasure does not exist at all. Legend has it that the treasure is hidden in an unknown plane, and there are only ......"

As Polly prepares to tell this long, magical story, Monica's voice comes from outside the door: "Master Guise, you're back......"

Keith walked in, Polly quickly closed his mouth, and said to Da Liang: "I'll go first, when to go to the sewers to find me directly, you know where I'm usually located." ”

Polly greeted Gise and left.

Keith asked Da Liang, "You want to go into the sewers?" Looking for Polly to lead the way, do you want to go down to the second floor? ”

"We're going to the third layer, it's a mission given by the Holy Angels, they're hunting down an important criminal, and this prisoner seems to be hiding on the third level."

Keith muttered to himself, "The third layer of sewers? It was a very dangerous place, and if a holy angel entered with a squad of elite archangels, there should be no problem. It has nothing to do with me though, let your black elves in, and get a little more dressed, and I can hear the sound of Polly's eyes dropping. ”

Listening to Gith's tone, he seemed to be familiar with the sewers of Shangjiang City.

Let Monica come in and continue to guard the shop, and Da Liang follows Keith to the backyard to continue his studies on the transformation of the dhow.

There are no ready-made drawings to copy, and it is impossible to learn how to transform a ship in a short time.

Under the guidance of Guise, Da Liang remodeled the dhow drawings over and over again, and in the continuous failure, he gradually mastered some tricks, and succeeded in reducing the defense by 1%, so that the base speed of a dhow increased by 2% after the transformation.

Picking up Da Liang's final work, Guise said: "For a dhow, speed is life, and the transformation of a sloop is all designed around increasing speed, but there are some problems with your transformation idea. I don't think it's advisable to increase speed by reducing defenses, and the first task of every ship is to save itself first.

Speed is as important as defense, and it is this point of view of yours that makes me decide to accept you as a disciple.

However, don't think that this point of view only applies to battleships, I think you should complete your battleship design exactly according to this principle from the beginning.

The sloop's ability to compress its defenses has reached its limit, and it may seem like a 1% reduction is nothing for a sloop, but in real combat, its hull damage resistance is much lower than the 2% increase in speed.

Therefore, I think this transformation has caused a decrease in the combat capability of the hull, and it is a failed transformation. ”

Da Liang didn't expect that he finally succeeded in completing a transformation that made him very satisfied, but he was belittled by Gise for nothing.

So Da Liang asked: "But the design of the dhow has reached the level of perfection, and increasing the speed of the ship can only start by reducing its own weight or increasing the power. If the sail is increased, the balance of the hull will be reduced, and it is easy to cause capsizing in strong winds, so we can only find ways to reduce the weight of the hull. ”

"No, no, no, the dead weight of the hull cannot be reduced any longer. You're now stuck in a circle, the same one I've encountered in battleship design. How to increase the speed of the ship without reducing the defense of the hull is a problem we also face, but your problem is much easier to solve. Guise drew a few lines around the dhow blueprint on the blackboard.

Then he said: "As the ship travels, it will encounter the resistance of the sea, and reducing the resistance can increase the speed of the ship." However, the design of the hull of the dhow only took into account the longitudinal resistance, but did not take into account the lateral resistance. Lateral drag has not yet attracted the attention of too many ship designers, but in fact, it has a very large impact on ships with light weight. If the lateral drag can be reduced in the hull design, the speed of the ship can be greatly increased. A large part of the credit for what I am doing now can be attributed to the study of lateral resistance. ”