On September 13, the Zheng family gathered most of their own troops, a total of more than 20,000 soldiers and horses, and led more than 300 large and small warships towards Keelung City.

The huge fleet was first repaired in Penghu, and then advanced north along Dayuan.

Although the southern part of Taiwan was largely controlled by the Dutch, the Zheng family still controlled the Han villages, and at the same time controlled Beigang in Taichung, which was convenient for them to resupply.

Seeing such a large fleet dispatch, the Dutch in the cities of Geranza and the city of Red were all taken aback.

Johann van der Bolger, the fifth commander of the Dutch East India Company in Taiwan, also sent a special envoy to ask whether the Zheng family wanted to go to war with the Netherlands without declaring war.

Knowing that the Spanish stronghold north of Taiwan had been occupied by Luzon, and the Zheng family's trip was to crusade against Luzon, Bolger breathed a sigh of relief.

But then he became vigilant again, and the Luzon quietly took the chicken coop of the Spaniards, and they would not covet the Tainan commanders.

In the past two months, the news that the Zheng family has been repeatedly harassed by the Luzon fleet has of course also reached his ears, and now combined with the news of the chicken coop, Bolger's heart is full of alarm bells.

In the afternoon of the same day, he sent someone with his own handwritten letter to Batavia in a fast sailing ship to ask for help.

At present, there are only 1,200 soldiers, which is far from enough for the next crisis.

In Keelung City, preparations have already been made at this time.

In order to further exert the home advantage, Mao Yuanyi also instructed the naval officers to make a batch of mines to ambush near the bay of Keelung City, so as to prevent the Zheng family's naval army from directly attacking Keelung City.

Few people know that the Ming Dynasty was the first country in the history of the world to invent mines, and Mao Yuanyi had previously introduced this weapon in detail in the "Wubei Zhi", and now it is a familiar road for him.

At two o'clock on the morning of 15 September, Wei Min'an, the general of Dingyuan Fort, first sent a warning message.

The Zheng family's fleet is here.

Keelung Bay was obviously unable to fully exploit the firepower advantage of the Luzon fleet, and as soon as he got the news, You Degao immediately ordered all the navy to board the ship.

More than 30 naval warships all sailed out of the port, leaving only the ships captured from the Zheng family.

"The Zheng family is pouring out of the nest", put down the telescope in his hand, and You Degao's face was solemn.

At this time, the ocean in the northwest was densely packed with Chinese sailing ships with square Chinese hard sails, which made people a little panicked.

"The whole ship is spread out and the maximum firepower surface is maintained."

With You Degao's order, the entire Luzon fleet began to move.

The good news is that at this time, the northeast wind has begun to blow in the Taiwan Strait, and the situation is very favorable to the Luzon fleet.

Seeing that more than 30 warships on the opposite side were lined up, on the largest lucky ship in the Zheng family's fleet, Zheng Zhilong was wearing a Ming army chain mail outfit and waved his big hand.

"Order, the whole ship will be bullied together."

"Damn, I want to see if you have more guns or more boats."

Zheng Zhilong was ruthless in his heart, and the words he said were all gritted teeth.

The Zheng family's fleet was still headed by two-zhang arson boats, and these small boats with a team of 10 people rowed fast and rushed towards the fleet.

However, the first shot of the whole battle was not fired by the Luzon naval fleet.

On Dingyuan Fort, Wei Min'an saw that the Zheng family's boat had entered the range of fire of his fortress, and took the lead in issuing the password.

"Target northwest, all fire!"

"Boom", "Boom", "Boom"

At the head of the castle wall made of cement and steel in Dingyuan Fort, 16 six-inch coastal defense guns let out a dull roar.

There is still a big difference between the six-inch coastal defense gun specially developed by the Ordnance Bureau of the Ministry of Industry in Luzon and the six-inch gun carried by the navy.

Because there is no weight limit, in order to pursue a longer firing distance, this six-inch gun, named Vulcan cannon, weighs 6,000 catties alone.

You must know that the Liu family has long been using refined steel to make cannons, and this weight is simply incredible for the Liu family's artillery.

Therefore, the firing range of the Vulcan cannon is as high as 7 miles, which is much more than the range of 5 miles of the artillery on the Sun Wu.

Especially under the guidance of Liu Ximing, Zhou Jiang, Tang Hong, and others, directors of the Ordnance Bureau, have been developing breech guns.

After Luzon was taken, with the high-quality iron ore on Luzon Island, Zhou Jiang and others finally successfully developed a locking device with good quality.

With this feature, the rate of fire of the shore anti-aircraft guns on the Dingyuan Fort was as high as 40 rounds in a quarter of an hour.

Therefore, after Wei Min'an gave the order, two people in the artillery team of six people immediately carried the top pointed shells into the artillery together.

Immediately, another person filled in the package of the projectile wrapped in jade drop paper and immediately locked the chamber of the gun.

With a bang, the pointed shell spun at high speed and flew towards the sea under the effect of the rifling in the breech.

And then, of course, it didn't happen.

On the ocean surface of Keelung Bay, You Degao, who was holding a telescope to observe the movements of the battlefield, had already begun to scold.

"What's going on with this Wei Min'an, stupid as a pig, before the enemy approached, his shore fire power was exposed, and Lao Tzu turned around and wanted to withdraw him."

Jiang Baolin also held back the fire in his belly, but when he saw this, he still stepped forward to persuade the angry You Degao.

"Governor, it's useless to be angry, just wait until you turn around and deal with him."

"Bastard"

On the ocean, the arsonist ship in front of the Zheng family was also startled when it heard the sound of cannons, and then laughed again.

How many fucking miles away from this, a bunch of cowards in Luzon.

But the sound of "bang", "bang" and a few shells entering the water immediately followed, stirring up huge waves that splashed between the Zheng family's arson fleet.

"Mother, hurry up and row the boat!"

The soldiers of the Zheng family were dumbfounded, and immediately reacted, and one by one they were so frightened that they used their strength to row desperately.

"Fuck it, grandma is a bear, this Luzon artillery can hit so far!"

On the central Fu boat of the Zheng family's fleet, Zheng Zhilong also put down the monocular in his hand with a shocked face, and swallowed a mouthful of saliva with a grunt.

"The red-haired artillery can't hit so far", Zheng Zhilong looked at Zheng Zhibao on the side with some bitterness.

"Why don't we go around in a circle?"

Seeing that the main force of his own fleet seemed to be about to sail into the range of Dingyuan Fort's firepower, Zheng Zhi suggested dryly.

"Yes, give the order, the whole ship will go around to the northeast to avoid the Luzon fortress."

"Governor, look, Zheng Jun has changed formation."

As soon as Zheng Zhilong's fleet moved, the Luzon fleet immediately noticed it, and as soon as it saw that the entire Zheng family fleet began to circle to the north, You Degao excitedly punched the side of the ship.

"Hahaha, Wei Min'an, this bastard boy, he is really crooked, the Zheng family is obviously afraid of our shore fire artillery, and the order is that the fleet will speed up to clear the enemy boats."

In Dingyuan Fort, Wei Min'an and others, who also observed the Zheng family's movements, were also quite excited, and when they saw the flagship raising the order flag to encircle and suppress the boat, Wei Min'an once again urged his subordinates to speed up the cannon.

The Zheng family obviously lost a move, and during the period when its main fleet bypassed the range of Dingyuan Fort, the fleet led by You Degao actually turned back and bullied.

Hundreds of artillery guns bombarded the boats on the river, and from time to time the boats were overturned or pierced by a single shot.

Seeing that his side was somewhat defeated, the Zheng family's boats close to the main fleet also began to evacuate towards the open sea.

The Zheng family's dinghy unit suffered heavy casualties.

By the time the two fleets of the Zheng family converged again, the loss of nearly 200 small boat troops was as high as fifty percent.

Above the Zheng family's flagship, Zheng Zhilong was ashamed and indignant.

After so many years of crisscrossing the South China Sea, how did the Zheng family suffer this kind of loss.

Seeing that the Luzon fleet had always stayed within the range of fire from the shore defense fortress and refused to come out, Zheng Zhilong clenched his hands, and the green tendons on his forehead were suffocated.

"Big brother, the Luzon people have fierce firepower, and they can't be the enemy in the front, so let's fight with them here on the one hand, and on the other hand, send troops to land behind Jilong Island, as long as the enemy fortress is eliminated, then it will be a two-sided attack."

"Good idea", hearing Zheng Hongkui's suggestion, Zheng Zhilong was overjoyed.

The Zheng fleet was soon split into two, except for nearly 100 large and small warships still confronting the Luzon fleet 10 miles off the coast of Keelung, and the other detachment of 100 fleets began to move westward.

"What does the Zheng family want to do?"

You Degao and others don't understand the Zheng family's tactics very well.

Mao Yuanyi, as an outsider, saw it clearly, and he broke the Zheng family's plot at once.

"Our army's firepower is so powerful, the art of war is cloudy, if it can't be corrected, it can be surprised, the Zheng family must want to outflank our army's back road, and the governor has to guard against it."

Mao Yuanyi's words made You Degao and others suddenly realize, but a group of naval officers burst into laughter immediately after.