Military engineering emerged with the emergence of war and developed with the development of war. It has a history of 5,000 years. Excellent military engineering can protect oneself to the greatest extent, destroy the enemy, and achieve victory of the weak over the strong and the few over the many.

In this project, China, which built the Great Wall two thousand years ago, claims to be the second best on the planet, and no one dares to claim to be the best. From the earliest days of building cities when living, constructing trenches, setting up stakes, chevaux de frise, traps, etc. to establishing a three-dimensional defense system, the master of this development is Qi Jiguang, the strongest contractor in the Ming Dynasty.

In just a few years, Marshal Qi reconstructed the 2,000-mile Great Wall in the defense zone into a super-invincible and cool defense system, and relied on it to achieve a great victory at Xifengkou, captured Dong Huli, and made the Tartars never dare to invade Ji and Liao again.

Jin Ke, Macron and others were all excellent generals who grew up under Qi Jiguang, so they naturally had a lot of experience in building fortifications. With the addition of Zhao Gongzi's cement and science, they were not much inferior to Qi Jiguang, if not better than his master.

After Master Zhao made the plan of "luring the enemy into a trap", they hung up a banner that read "more sweat before the battle, less blood during the battle" and led officers, soldiers, civilians and craftsmen to build a large-scale project in Qing'ao Bay. Until yesterday, they had not stopped digging trenches...

Oh, by the way, that ditch was not the one the black slaves had just filled, but another one in front of their defense line.

So when the black slaves finally rushed to within 20 meters of the bunker in the hail of bullets, they fell into the trench like dumplings, screaming.

"Another fucking ditch?!" Fernando's eyes almost popped out. "Is this the end?"

As a military aristocrat, he had fought wars for half his life. His opponents ranged from Venetians to blacks to Arabs to Indians, but he had never seen such a despicable way of fighting!

If the opponent was weak, he wouldn't say anything, but they were clearly well-armed, well-trained, and extremely powerful. Why couldn't they have a little chivalry and fight a good battle? Why did they have to do so many tricks? It was so annoying!

And maybe because of the tight time, the bamboo spikes had not been installed in the trenches in time, so the black slaves landed on the soft soil and were safe and sound. The companions behind followed suit and rushed to jump down, and the supervising team couldn't stop them.

As a result, Fernando could only watch the slave camp disappear before his eyes.

Seeing that there was no human shield, the Annan mercenaries were also dumbfounded. A burst of gunfire rang out, killing dozens of them, and they were so scared that they quickly lay on the ground.

But the Portuguese gave them muzzle-loading rifles. How could they reload while lying on the ground?

The supervisory team then changed to kicking the Annan people's butts, roaring and shouting: "Get up, you bunch of monkeys, some of you line up and shoot, and cover the other half to rush forward!"

The mercenaries were quite obedient. They bravely stood up upon hearing the order, and laboriously loaded their muskets that were almost as tall as them, then raised their guns and fired forward.

People kept falling down, but they were soon replaced by others, and they fought back and forth with the opponent.

The other half carried the pedals made of several bamboos, and rushed forward with a roar, and placed them on the moat. Then, using their small size and agility as an advantage, they rushed to the other side in a line.

Seeing the three thousand Annan monkeys split into more than ten groups and quickly rushed to the moat, Fernando smiled sarcastically. The same trick was used on the Pope's Saints for the second time, but it had no effect.

But his smile suddenly froze, and he saw countless bamboo tubes with handles flying out from behind the shelter, emitting white smoke. The monkeys hurriedly dodged, but some were hit by them. It hurt a lot, but it was nothing serious.

What kind of crappy weapon is this? As the monkeys were thinking about it, the bamboo tubes exploded one after another.

Amid the deafening explosion, broken pieces of porcelain and bamboo flew everywhere like heavy rain, causing the Annan mercenaries to fall down in large numbers and roll on the ground screaming.

Seeing the Annan mercenaries lying on the ground like a bloody mess, all the Europeans were stunned.

"The devil's weapon!" someone shouted.

And not just the same!

At the same time, the sound of the gunfire also changed. Before, it was a series of bursts with obvious pauses, but now it became a series of bursts of gunfire... The sound of gunfire was like frying beans without interruption, as if their muskets did not need to be reloaded.

The sudden and continuous gunfire and the constantly flying exploding bamboo tubes caused great casualties to the Annan mercenaries who rushed through the trenches, and they were blocked 20 meters away from the defense line. Groups of small men fell down like wheat being cut, and they could not move forward!

Mercenaries are also paid to fight, so it is true that they should fight bravely, but they cannot just die in vain!

Seeing the dead bodies of their compatriots scattered all over the ground in front of them, the frightened Annan people all stood still and dared only shoot from a distance. No matter how the supervision team urged them, they dared not cross the line.

Fernando was also stunned. This is not scientific... Oh no, this is not reasonable!

How could the musketeers stop the charge of superior forces? Then the cavalry could just retire and there would be no need to equip the troops with other weapons. Just a musket would do the job!

Just when he was about to doubt his life, the rumbling gunshots from the opposite side suddenly stopped.

"Stop shooting!" He quickly stopped the Annan people who were still shooting indiscriminately, and stared at the enemy's position with wide eyes.

The sun had risen, and the yellowish sunlight shone weakly through the morning mist, improving visibility. Fernando could barely see that the blockhouse and sandbags on the opposite side seemed to be empty.

"They seem to have retreated." the adjutant reminded.

"Yes." Fernando nodded and ordered the supervisors to urge the Annan people to go forward and check. He walked to the edge of the trench and looked at the black crowd below.

"What a bunch of cowardly black bugs!" He snorted coldly, took out a pistol from his waist, pulled the trigger and fired a shot downwards.

Then he heard a loud earth-shattering noise, and he felt as if he was hit by a hammer in the chest. The whole person flew out like dry grass in the north wind, vomiting blood.

The man was in mid-air, and he could only see black, yellow, red, and white raindrops flying across the sky. In the rain, there were also countless broken limbs and bodies, as well as hideous human heads...

Then he fell heavily to the ground and passed out.

~~

"Colonel, Colonel!" After an unknown amount of time, Fernando finally heard the adjutant's voice again, seemingly far away and near.

He opened his eyes with difficulty, and saw that the sky had turned blood red, covered with golden stars, and was still spinning.

"Colonel! Are you okay?" The adjutant's voice brought him back to his senses again.

Fernando then remembered that he was still on the battlefield. He quickly calmed himself down and was about to ask what happened, but when he opened his mouth he spat out a mouthful of blood.

When the world in his eyes gradually became clear again, there was no need to ask any more questions, because he could clearly see that the blockhouses and sandbags on the other side of the trench had disappeared.

Instead, there was a huge black pit and mutilated corpses all over the ground.

Those bastards, I wonder how much gunpowder they buried behind the defense line...

"Oh my God. Is this something a human being would do?" Fernando muttered.

"Colonel, there's something even more outrageous..." The adjutant pointed ahead and said in a trembling voice, "Look there."

I don’t know if it’s because the sun has come out, the temperature has risen, or because of the big explosion just now, but the fog in front of my eyes has obviously become much smaller and has basically no longer affected my vision.

Fernando looked in the direction he pointed, and saw a wall more than three meters high appear in front of him.

His first reaction was to turn around to see if he was going in the wrong direction, but the three-meter wall behind him was still there.

During this process, he also saw a wall on the left.

Fernando looked to the right again and saw another wall...

"Why are there walls on all four sides?" The colonel's head was buzzing. "What the hell is this?"

"This is the urn city." The manager of the Wuyang Trade House answered his question and said, "It is also called the Moon City and the Quchi. It is a defensive facility integrated with the city wall. Sometimes the defenders will deliberately let the enemy enter the urn city to create a situation of 'catching a turtle in a urn'."

"You mean, we are all idiots now?" Fernando has been in Macau for many years and can speak a lot of Mandarin.

"You can say that." The steward nodded and said sadly, "Retreat quickly, Colonel. We have no chance of winning."

"Bullshit! Aren't they just walls and trenches? If I can get through one, I can get through ten! No matter how many tricks they use, they can't defeat me!" Fernando was furious, "Help me up, I want to lead the attack myself!"

"Wake up, Colonel! The fog has dissipated. We no longer have the advantage of time, place and people. They have already made sufficient preparations." The steward pointed to the wall in front and said, "Maybe, there will be another wall inside the wall we pass. I have seen a 'sun' shaped urn city, and I heard that there is also a 'eye' shaped one."

"Yes, Colonel, and I'm afraid it won't be that easy this time." The adjutant whispered, "There are defenders and cannons on that wall."

"..." Fernando had already seen that the wall was different from the previous ones. There were gun emplacements on it, as well as shooting holes and barbed wire to prevent climbing.

He looked around and saw that the entire slave camp was in the pit, half of the Annan mercenaries were killed, and the remaining half were silent and completely out of control.

Now there are only 1,500 Europeans who can be mobilized.

Fernando couldn't help but fall into a dilemma.

Retreat in the face of difficulties? They have already suffered heavy losses, and the fleet has run out of food, so they can only retreat to Macau. But they took a huge risk and came out in full force to fight the Jiangnan Group in the north, isn't it just to stay in Macau? If the officials in Guangdong knew that they did not win the battle with the Jiangnan Group, they would definitely execute the governor's order to expel them without hesitation.

Fight to the death? Portugal has so few people, they can't afford to die!

He was struggling with his thoughts when the rumble of artillery sounded from the fort ahead. In the blink of an eye, the shells whistled and hit the European team accurately, killing dozens of them on the spot.

Whether they were Portuguese, Spanish, Dutch, British or French, they were all in chaos and fled in panic.

The shells seemed to have eyes, and every shot hit the crowd, causing huge casualties.

p.s. Keep writing.