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

Finally, Lin Feng arrived at the artillery regiment's garrison.

At the mountain artillery battalion, a large number of 75mm artillery pieces were parked on the parade ground, including domestically produced Kremlin mountain guns and captured Japanese Type 41 mountain guns.

Soon, Lin Feng discovered an interesting phenomenon.

When he arranged for the system artillerymen and the captured Japanese 75mm mountain guns to stand together, he was able to trigger the upgrade option.

What are we waiting for? He doesn't lack merit points now, he must upgrade everything!

A series of barely perceptible flashes of light appeared, and the original 75mm Kremlin mountain guns and the captured Japanese Type 41 mountain guns were all transformed into brand-new 75mm Bofors mountain guns.

More than 3000 merit points have been used up.

A total of 26 artillery squads appeared in front of Lin Feng.

Each artillery squad is driven by four tall, large horses.

They pulled the gun carriages, two in front and two behind, the carriages loaded with shells, and the elegantly sculpted Bofors M1930 mountain guns hanging behind them.

Although this cannon is manufactured by Bofors in the Nordic country of Bluetooth, it actually has Hansin heritage.

As is well known, due to the restrictions of the Treaty of Versailles, Hans, as a defeated nation, was not allowed to develop military technology on a large scale domestically.

Therefore, they circumvented the contract by secretly collaborating with Bofors and accumulating experience in weapons design.

The company responsible for developing this mountain gun was the renowned Krupp.

This directly led to the M1930 becoming the best-performing mountain gun before World War II, with a range of 9.1km, far exceeding that of older Croatian mountain guns and the Japanese Type 41 mountain gun (6km).

The downside is that it is too heavy, weighing close to 800kg, far exceeding the 386kg of the Kremlin mountain gun. However, Lin Feng has no shortage of horses and trucks now, so he doesn't care too much about the extra weight.

"Um?"

Lin Feng subconsciously glanced inside his system space.

Similar to the previous upgrades to infantry and mortar squads, the old Kremlin and Japanese mountain guns that were replaced did not disappear but were returned directly to the system space.

Suddenly, an idea struck Lin Feng's mind.

"Holy crap? This seems like it can be done?!"

His eyes lit up instantly.

He suddenly discovered a brilliant way to exploit the system.

First, he could use the exchange points to buy a squad of Kremlin mountain guns, and then sell the artillery to a middleman like Wang Tianlu to make a profit.

Next, he could equip this artillery squad, which was now without its cannons, with captured Japanese artillery or old cannons returned from the system space.

Then, you can upgrade again by spending merit points.

"Holy crap? It seems like it really works?"

"If this cycle continues..."

Lin Feng was calculating rapidly in his mind.

This means that he only needs to spend 80 merit points to turn an old cannon into a new one, and the old cannon will still be there.

It's equivalent to spending 80 merit points to directly buy a Bofors M1930 mountain gun, which costs $1.6 when imported.

Of course, doing it this way wouldn't be possible without the horses and elite artillery squads provided by the system.

But he could train artillery from scratch himself, or directly recruit artillerymen from the defeated soldiers.

The problem of not having enough money to recharge exchange points and buy more cannons was instantly largely solved.

Lin Feng looked at the mountain of old cannons in the system space and grinned like a weasel that had stolen a chicken.

Unfortunately, Wang Tianlu followed the 9th Army Group in its retreat along the southern front, and he didn't know if the enemy was still alive. Otherwise, he could have exchanged for dozens more Bofors mountain guns to sell and use the money to buy tanks and heavy artillery.

Finally, Lin Feng tried upgrading the new Bofors mountain gun crew and found that the only upgrade option was to add a mule for 5 merit points.

I don't know if the upgrade has reached its limit, or if the subsequent upgrade options require higher privileges than Level IV?

-----

Outside Jiangyin City, the cold wind howled in the dead of night, rustling the withered grass.

Apart from the occasional commands that could be heard from the few camps recently occupied by the Provisional 8th Army, the surroundings were deathly silent.

But deep in the darkness, several figures were sneaking around in the bushes.

"Third Brother, if we do this... won't our babies be born without an anus?"

A thin, small man hunched his shoulders, clutching a bundle of oil-soaked hay tightly in his hands, his voice trembling.

"Pah! You coward!"

The burly man, called Third Brother, spat and held a notebook in his hand, drawing something on it with a pencil by the dim moonlight:

"You damn bachelor, don't even have a wife, and you run off to that half-closed door as soon as you get your monthly paycheck? You want to have kids? Dream on!"

"Let me tell you, if this is done, it will be a great achievement."

The Japanese... oh no, the Imperial Army said that as long as we light this bonfire and guide the planes in the sky, we'll get great benefits.

"At that time, you can afford to book not only prostitutes, but even the top courtesan."

"But..." the skinny man was still a little scared, "Wasn't this task assigned to us by Butler Ma? When did you come into contact with the Japanese?"

Shh! Shut up!

Third Brother slapped him hard on the back of the head:

"Butler Ma is someone who works for Master Ma."

Who is our Master Ma? He is Jiang Yin's heaven.

He's already made connections with the Imperial Army. From now on, Jiangyin will be under the Ma family's control. We'll just sit back and enjoy the spoils. Why are you asking so many questions? Don't you want to live a long life?"

The group whispered amongst themselves as they carefully protected the tinderboxes in their arms and made their way to the designated spot.

However, what they didn't know was that several pairs of cold eyes had been watching them for a long time, hidden in the bushes and trees around them.

"rustle……"

A very slight friction sound rang out.

Before the third brother could react, several dark figures, like ghosts emerging from hell, suddenly darted out.

They were cloaked in camouflage made of twigs and leaves, and their faces were painted with black and green paint, making them look like blurry shadows in the moonlight, with no discernible features.

"ah--"

"Who?!"

"What are you doing...?"

"Don't move!"

After a few short gasps, everything returned to calm.

The third brother felt dizzy and then was pinned to the ground by a large, iron-like hand. A cold dagger was pressed against his carotid artery, and the stinging pain made him wet his pants instantly.

"Shut up if you don't want to die."

A deep, cold voice sounded in his ear.

The visitors were the elite reconnaissance troops directly under the Provisional 8th Army.

As a time traveler, Lin Feng knew all too well.

How rampant were the Japanese infiltration tactics and the sabotage activities of traitors during the entire Battle of Shanghai and the subsequent War of Resistance against Japan?

There were many national heroes who protected the Great Xia, but there were also many scoundrels.

Many fortified positions were not breached from the front, but rather stabbed in the back by traitors.

Therefore, as soon as the troops set up camp, he deployed these elite reconnaissance soldiers produced by the system.

Each of their classes carries a walkie-talkie to report situations at any time, which is equivalent to them "placing eyes" on a map.

"take away."

The reconnaissance platoon leader sheathed his dagger and said coldly, "Interrogate them tonight, teach them a lesson. I need to know who ordered this and if they have any accomplices."

"Yes."

(Note: Only when upgrading infantry squad weapons and mounting artillery will the old weapons be returned to the system space. Tanks, aircraft, and warships will become new vehicles directly after a major upgrade.)