Zhou Xiao received Lin Yuan's order to defend Yanji, and the Second Division immediately began to build fortifications outside the dense stone forest to defend Yanji, an important city on the Sino-North Korean border, after Lin Yuan took over the northeast, Yanji became an important commercial city, although the border was blocked by Korea under Japanese rule, there were still Korean merchants who secretly went to China to trade for profit.

In order to be able to enter China for trade, these North Korean businessmen did not hesitate to bribe the Japanese authorities with large sums of money, and the Japanese authorities initially arrested a few people, but later the chain of interests became longer and longer, and the amount of money involved became larger and larger, and the Japanese authorities turned a blind eye.

As a result, Yanji became very prosperous, and the permanent population at this time had exceeded 150,000, and the Second Division certainly knew what it would mean if the Japanese army captured Yanji, it would mean a crazy massacre! So they hurried to build fortifications outside the dense stone forest, and the 1st and 2nd Independent Brigades were also combined with the 2nd Division.

Lin Yuan's troops showed the Japanese army what is called modern trench construction: excavators and concrete mixer trucks drove from the rear, and in just a few hours they built a defensive position, especially the anti-tank triangular cone in front of the position, which can be called a variant of the Qing army's rejection of horses, but it was made of concrete, and the Japanese tanks did not want to get it away without much effort.

When Kumamoto Shoichi heard that the Japanese commander had ordered the Japanese commander to single-handedly challenge the tanks of Lin Yuan's troops, he not only did not punish the Japanese commander, but praised the behavior of the Japanese commander, believing that this kind of single-handedness could reflect the bravery of the Imperial Japanese Army and the soul of the Yamato nation.

At three o'clock in the afternoon of December 15, the vanguard of the Japanese army discovered the fortifications built by Lin Yuan's troops, and reported the situation of the fortifications to Kumamoto Shoichi, who was shocked when he heard about the anti-tank triangular cones and trenches on the ground, and thought: "How did Lin Yuan's troops build fortifications so quickly?" ”

At this time, a staff officer said: "Captain, the enemy has already built fortifications, should we postpone the attack?" ”

Kumamoto Shoichi said loudly, "How can that work?" Now is our time to show the majesty of the Imperial Japanese Army, order the troops, attack! As soon as the order was given, the Japanese front-line troops began to act, and it was the first time they saw the anti-tank triangular cones, and they didn't know what they were, so they ignored them and rushed directly with the tank.

The anti-tank triangular pyramid was a triangular prism, about half a meter high, and the top was a platform, and the Japanese tank drivers did not want what kind of defensive effect this thing had, so they rushed over directly, and the tracks on one side climbed up the triangular cone, and the Japanese driver's wishful thinking played very well, that is, to drive directly from the anti-tank triangular cone.

The Japanese tank successfully rushed onto the triangular cone, and the Japanese pilot was triumphant, thinking to himself: "Isn't it just a triangular prism?" The people of China put this kind of thing on the ground in a vain attempt to stop our progress! It's a joke, watch us drive over them. But what happened next made the Japanese driver unable to laugh anymore, because the tank actually stopped on the triangular prism and did not move.

The driver's first reaction was to look at the tachometer of the driving wheel, and found that the driving wheel was still spinning again, but the tank just stopped on the triangular prism and did not move! It turns out that this is the power of the anti-tank triangular cone, when the tank rushes to the top, due to the uneven chassis of the tank, the tank will get stuck on the anti-tank triangular cone, without the help of its companions, it is difficult to get off from the top with its own strength.

This kind of anti-tank triangular pyramid is not difficult to manufacture at all, anyone can think of it, but not everyone can think of it, in the process of supporting the Qing court in Japan's fight against Lin Yuan, whether it is the "first wise general of the Meiji era" Kodama Gentaro or the "god of war" Nogi Noshinori, no one has come up with this method! However, Lin Yuan knew this method, so he used it for the Japanese in this place.

For a time, fifteen Japanese tanks were stuck on the anti-tank triangular cone and could not move, and the Japanese commander immediately said when he saw it: "The second echelon goes up and rescues the stuck tanks with a towing rope." ”

The second echelon set off immediately, but Lin Yuan's troops didn't give them that chance! Lin Yuan's troops dug trenches between the anti-tank triangular cones for the bazooka men to march, and the bazooka launch teams saw that the Japanese tanks were stuck on the triangular cones, like Wang Ba, who had only been overturned to the ground and could not turn over, and immediately rushed over from behind with bazookas.

They used the trench to maneuver near the Japanese tank, the Japanese tank was stuck in the triangular cone, the field of view was limited, and they did not find Lin Yuan's troops who came up secretly, plus the Japanese infantry were behind, and no one provided support for the tank, so Lin Yuan's rocket launcher launch group comfortably approached the Japanese tank.

The bazooka men then fired rockets at the Japanese tanks, their rockets were all high-explosive shells, which were very suitable for dealing with fortifications, but they were unable to fight the tanks, but they followed Lin Yuan's instructions and aimed at the weakest tracks of the Japanese tanks and fired rockets.

The rockets exploded near the load-bearing wheels and tracks of the tank, and after a few rockets came down, the load-bearing wheels and the driving wheels fell, and the tracks were scattered, and the Japanese tanks suddenly became lame donkeys, and the rocket launcher launch group of Lin Yuan's troops was very fast, and they withdrew after the fight, so when the angry Japanese follow-up tanks rushed up, they had already slipped into the trenches and hid behind the trenches to "be happy".

It took a lot of effort for the tanks of the second echelon of the Japanese army to get those tanks off the triangular cone, but the tracks of the tanks were broken, and it was very difficult to repair them on the battlefield, so the Japanese temporarily threw these tanks down and only brought back the tank crew.

Furious when Kumamoto heard the news of the setback of the attack, he personally rushed to the front line and, after inspecting it, said: "Those triangular cones are very strong, and the main artillery tanks will never be able to push them away, and the only feasible way to get them away is to blow them up with explosives." ”

The staff officer said: "Our engineer brigade was in the rear and did not follow. ”

When Kumamoto heard this, he said angrily: "Then transfer them to me, remember, let them bring more explosives." ”

The staff officers then went to mobilize the engineer brigade, and at about nine o'clock in the evening, the engineer brigade arrived with explosives, and as soon as they arrived at the battlefield, they began to install explosives on the anti-tank triangular cone, but Lin Yuan's troops quickly understood the Japanese army's intentions, and they immediately transferred the mortars and used fragmentation anti-personnel shells to bombard the Japanese engineers.

One after another shells exploded in the air, and the Japanese sappers were killed and wounded countless at once, but the fragments did not cause any damage to the triangular pyramid on the ground, and Kumamoto ordered angrily: "The main artillery chariot immediately fires shells at the position of Lin Yuan's troops!" ”

The Japanese immediately opened fire, but Lin Yuan's troops hid in the trenches when the cannon sounded, and the Japanese artillery shells were useless, but the Japanese army's concentrated tank action was discovered by Lin Yuan's artillery unit, and the artillery unit immediately began to prepare to return fire, this time it was not a 122 mm self-propelled howitzer, but a more powerful 155 mm howitzer!