You were tasked with guarding the Sihang Warehouse, and you brought out a Tiger tank?

Lin Feng was naturally unaware that he had become the muse of Hans' military industry.

At this moment, back at his post, he looked at the several large, open crates in front of him, his face beaming with joy.

If someone who didn't know better saw this, they might think he was about to become a groom.

Inside the box, glittering yellow croakers, gleaming silver ingots, and stacks of thick silver dollars shone with a captivating luster under the sunlight.

This is the spoils of confiscating Ma Bancheng's assets.

"System, recharge."

Lin Feng waved his hand, his heroic spirit soaring to the heavens.

"Buzz—"

The gold and silver in the box vanished instantly, transforming into numbers flashing on the system panel.

As for those legal tender, land deeds, antiques, and calligraphy and paintings, the system remained aloof and refused to accept them, leaving them in place.

Lin Feng didn't care; he figured he could exchange these things for money later anyway.

Current exchange points: 10418

"It's broken 10,000! It's finally broken 10,000!"

Lin Feng clenched his fist.

Now, the money for expanding the military is secured again.

time does not wait.

The Japanese 13th Division is advancing north from Wuxi.

The Japanese small boats have also occasionally crossed the blockade line to harass us these past few days.

The Yangtze River, the mother river of the Xia Dynasty, is about to become a new battlefield.

"Let's go to the riverbank."

Lin Feng, accompanied by a group of guards, drove to a reed marsh outside Jiangyin City.

The location was secluded, with moderate water depth, and the surrounding area had been sealed off by his troops.

The river wind was biting, and the reeds swayed in the breeze.

Lin Feng stood on the muddy bank, looking at the wide river surface, his mind sinking into the system.

"If we want to defend for a little longer, relying solely on the artillery on the shore is not enough."

We must have naval forces to kill the Japanese invaders' fleet, and even, if necessary, assist the main force in crossing the river.

"System, exchange for 10 PT-103 level torpedoes/gunships."

Current exchange points: 8918

"Boom—crash!"

Suddenly, huge splashes of water rose from the calm river surface.

Ten slender, streamlined speedboats appeared out of thin air in the water, rising and falling gently with the waves.

"Goodness..."

This thing is really big up close.

Each boat is over 24 meters long, over 6 meters wide, and has a displacement of over 50 tons.

Although it's called a "boat," its size is noticeably larger than a Tiger tank on land.

The hull is made of high-quality mahogany laminate and painted with a dark gray naval camouflage.

What is most striking is its ferocious weaponry.

On the bow deck, a 20mm Oerlikon cannon stands proudly.

On each side of the ship is a twin-mounted M2HB heavy machine gun turret with a shield, the four thick gun barrels exuding a chilling aura.

On either side of the ship, four Mark 8 torpedoes lay quietly in their launch tubes—weapons capable of sending Japanese destroyers to their doom.

"Attention, everyone! Line up!"

With a whistle.

On each boat, nearly 20 sailors dressed in pristine white naval uniforms and wearing brimless seaman's caps quickly lined up on the deck and saluted Lin Feng on the shore.

Their spirit was completely different from that of the army on land, carrying a salty and lean air of the sea breeze.

"Alright, this is my inland river fleet."

Lin Feng nodded in satisfaction.

With these 10 speedboats, plus their insane speed of 40 knots, even if the Japanese gunboats came in the water network of the lower Yangtze River, they would have a piece of flesh to be bitten off.

Moreover, both the 20mm Oerlikon cannon and the 12.7mm twin-barreled Lao Gan Ma can be used as anti-aircraft weapons, so the Japanese planes could not bomb indiscriminately.

However, Lin Feng was not satisfied with this.

He looked at the torpedo boats, and his mind raced once more.

An upgrade option popped up on the system interface.

The upgrade routes are divided into two distinct paths: one is the "armament upgrade," which focuses on modifying the existing hull, and the other is the "complete upgrade," which involves a complete overhaul.

"Let's see how to modify the guns and cannons first, after all, the fear of insufficient firepower is a terminal illness."

Lin Feng first opened the [Armor Upgrade] list.

[PT Boat Heavy Firepower Modification]

Upgrade Cost: 220 Merit Points

[Modification details: Remove all 4 Mark 8 torpedo tubes.]

Stern: Equipped with one 40mm Bofors machine gun.

Bow: Equipped with one 37mm M4 automatic cannon.

[Description: River Surface Mad Dog. Sacrificing the ability to instantly kill large warships in exchange for devastating sustained firepower against small and medium-sized targets. Utilizing high speed and close-range fire, it is specifically designed to eliminate Japanese troop transports, large warships, and patrol gunboats.]

"This is good!"

Lin Feng's eyes lit up.

In the inland waterway environment of the Yangtze River, the Japanese had relatively few large warships; they mostly had small gunboats of tens or hundreds of tons, or motorboats used for troop transport.

Using expensive torpedoes to attack those small boats is like using a cannon to kill a mosquito; it's not only wasteful, but also likely to miss.

Moreover, torpedoes are delicate things; if placed on the deck, they're like a giant explosive charge. If a stray bullet from the Japanese were to detonate one, the entire ship would be blown to bits.

On the contrary, Bofors and 37mm guns were the real "ship dismantling experts".

Let's look at the second option.

[PT Boat Support Firepower Modification]

[Cost: 200 Merit Points]

[Modification details: Removal of all four torpedoes; installation of two 8-cell 127mm MK50 rocket launchers on the sides.]

[Note: This is a waterborne Katyusha rocket. Although the accuracy of the rockets is questionable, a volley of rockets fired at the shore before a landing operation or during a retreat provides maximum damage and doubles the psychological deterrent effect.]

The image instantly flashed through Lin Feng's mind:

Several speedboats sped across the river when suddenly countless streams of fire erupted from their sides. Dense rockets rained down on the riverbank, turning the Japanese positions into a sea of ​​fire.

"This thing is awesome. If we ever have the chance, we can sail down the Yangtze River and give the Japanese soldiers marching along the riverbank a good thrashing... The image is too beautiful to bear."

However, considering the current merit points and tactical needs, Lin Feng still prefers the first "mad dog" mode.

After all, rockets are used up and then you have to go back to port to resupply, while Bofors can keep firing indefinitely.

After reviewing the weapon upgrades, Lin Feng clicked on the "Full Upgrade" option.

This is a true upgrade from slingshot to cannon.

[Upgraded to - SC-451 class submarine chaser]

Upgrade Cost: 250 Merit Points

Displacement: 350 tons

Armament: 1 x 3-inch (76.2mm) main gun, 2 x 20mm Oerlikon cannons, 3 x 12.7mm heavy machine guns, depth charge rails, sonar.

Speed: 22 knots

Lin Feng stroked his chin:

"It's big and stable. Although it's a bit slow, it can actually carry people and can also be used as a command boat. It's just that the firepower... is a bit awkward."

Although the 76mm main gun has a large caliber, its rate of fire is slow. When facing agile small gunboats like those of the Japanese, it is not as powerful as the 40mm Bofors gun.

This thing is better suited for catching submarines at sea; it would be at a disadvantage in hand-to-hand combat with the Japanese in the Yangtze River.

"Pass, next."