All of them are equipped with altimeters, and I am afraid that even a country as wealthy as the Yankees is reluctant to give earthen porcelain grenades, such shoddy weapons with altimeters.

In fact, it only takes a little trigonometry, just like everyone holds the grenade in their hand and counts for a few seconds before throwing it.

The damage of air-blastable grenades to infantry cannot be described in words. The fragmentation grenade of the air explosion did not have a dead angle at all. Almost all people in the range will be killed or injured.

And the most hateful thing is that Zhang Sixing's subordinates always like to use gasoline barrels and cannons to pour clay porcelain grenades down in piles.

At the head of the city, the Japanese officers, who were in front of them who were holding explosive canisters to break through the "Voldemort" barbed wire, fell into a large area under the aerial grenade.

What to do...... What to do......

The Japanese officers at the head of the city looked at each other, and without artillery, such a front was almost impossible to break.

"Tank, let the tank run sideways, crush the barbed wire with the tracks to clear the bullet mine......"

There are officers who have little confidence and make a suggestion that is almost mentally retarded.

However, this also made the officers at the head of the city brains, after all, what they had to deal with was the "Voldemort" barbed wire on the ground, with bullets and mines that could pierce the soles of their shoes.

"If only we could find a thick iron pipe and push it forward with a tank or a bulldozer."

This kind of suggestion will only provoke everyone's more disdainful eyes, but someone immediately has a solution,

"Yes, a bulldozer. The barbed wire and bullet mines stopped our soldiers from charging, but we could just shovel dirt to cover them. ”

"Okay, let the tanks fall back to the edge of the barbed wire, cover the machine guns, grenadiers to strike at the people and equipment hidden in the pits. In addition, there are cavalry and motorcycle units to look for bulldozers, and we want as many as we want. ”

Listening to the advice of his subordinate officers, Gu Shoufu's depressed heart was as clear as opening two doors.

As long as there are bulldozers, not only can they bulldoze barbed wire, bullet mines, but even bury those individual potholes directly. At that point there will be nothing to stop the infantry from charging, and as long as the infantry can charge, then everything seems to be solved.

As the frequency of Japanese attacks decreased, it seemed that the battlefield had calmed down again.

At this time, Zhang Sixing asked the radio to contact Tetsujiro Yamaoka,

"Well, how many people are overfilled."

"My lord, the rifle battalion has crossed the river to assist us in defending Donglong Mountain, and the people have been transported over almost 10,000 people."

Hearing Tetsujiro Yamaoka's report, Zhang Sixing stretched out his arm and glanced at the huge luminous watch.

"It's three o'clock, and there's three hours to go. Speed up, if you don't hurry up, I'm afraid none of us will have a chance to cross the river. ”

10,000 people passed in more than an hour, and in good conscience this speed is not slow. However, Zhang Sixing roughly estimated that 80,000 people would pass eight hours, or if the Japanese would be bombed by fighter planes in the future.

When Tetsujiro Yamaoka first collected ships, he also counted them on the scale of forty or fifty thousand people. After all, Zhang Sixing thought at the time that there would not be too many people who could follow him to rush into the encirclement, and forty or fifty thousand people would be able to cross the river before dawn in four or five hours.

But who would have thought that there would be so many people at once, and their actions would be slow.

And Zhang Sixing almost had no anti-aircraft guns in his hands, and there were only two anti-aircraft guns, how could he withstand the attack of Japanese bombers.

"I also have two anti-aircraft guns and some anti-aircraft machine guns in my hands, and I will transport them and ammunition to deploy them on Donglong Mountain to prevent the Japanese from bombing after dawn."

It was almost inevitable that he would be bombed by the Japanese when crossing the river, and Zhang Sixing had been mentally prepared for this.

The only thing he didn't prepare for was that 80,000 refugees would follow him out of Jinling City and cross the river with him.

Look at the refugees who are transported back and forth by cars, rickshaws, and livestock under the illumination of the "Kong Ming lantern" at the foot of Niushou Mountain. Even he saw a tank with several wagons towed behind it, on which were filled with people.

Although it seemed to be extremely dangerous in front of him, after all, Niushou Mountain, Jiangjun Mountain, Guanyin Mountain, and the positions of the teaching team, were all attacked by the Japanese one after another.

But fortunately, the artillery of these divisions and regiments was destroyed in their own hands, and the pressure on the Japanese pursuers by infantry alone was not great.

The big question now is how to cross the river quickly. If we don't think a little bit about this, I am afraid that tomorrow morning the Japanese will discover the convoy crossing the river and drop bombs......

But where can you find so many powered boats, with the impressive speed of a sailboat, it is impossible to have such a large capacity.

Unless a group of powered boats can be found immediately, it may be possible to speed up the crossing of the river.

Watching those cars full of people rushing to the riverside, Zhang Sixing thought hard. Cars are converted to marine engines, not to mention how difficult it is, and where to find enough propellers.

Even if there is power, without a supporting propulsion device, it is in vain.

Do you want to get a thousand meters of steel cable, then a winch, and then ...... That's just, okay. A thousand meters of hemp rope is good to say, where to find the steel cable. Even if there is a winch, where can I find so many baskets carrying people?

Moreover, the weight of the hemp rope will soak the hemp rope into the water, so the people in the basket will also be immersed in the river water, and it will only take a few minutes for people to die of hypothermia in this cold winter.

"Yamaoka, do you still have the gasoline cans you collected, can you make more of those big wooden rafts?"

This is what Zhang Sixing had asked Tetsujiro Yamaoka to prepare, and it was very simple, it was a four-column gasoline can, and then a wooden frame and planks were fixed on it to become a wooden raft that could carry many people.

But that thing has no power, it relies on the power of the little steamer to act.

"My lord, we still have quite a few wooden rafts. In order not to make the small steamer wait longer, when he arrived at the river, he immediately changed to a tow, but the speed was still too slow. ”

What to do, all kinds of scientific theories that can be remembered, and even movies, television, novels, and comics that I have watched all come to mind. But where is the brain hole so easy to obtain, especially at this fateful moment.

Alas, it's really a little hatred when you use your brains, but now you can't cross the river without opening your brains.

Today's cars are basically rear-drive, so how can the power output of the rear wheels be used?

"Wheel"

A word flashed through my mind, but how to use the word "wheel". And how to use the word "wheel" to think of a working propulsion device.

Then it occurred to him that the reason why the steamship was called a ship was because the earliest ships used paddle wheel propulsion. But such a big paddle wheel can't be made for a moment and a half.

A ramp was created behind the large wooden raft made of gasoline drums, and the car was fixed to the wooden raft, and the rear wheels sank into the river.

Assuming that it can be fixed, assuming that there is no problem with the device of the car, what problem can it solve, and what kind of drive device can be installed?

Once again, Zhang Sixing deeply felt that the brain hole was less hateful.