Just when the Chinese marines were in full swing preparing for the landing battle on Luzon, thousands of kilometers away in Shuangchengzi, a heavy snow made the Russian fortress group in the direction of the mountain pass in the distance completely blend into the white background, and the sun that did not feel the slightest warmth in the sky was reflected on the thick snow, and the strong reflection confused the vision even more.

The Shuangchengzi fortress group consists of hundreds of bright and dark reinforced concrete fortresses, and on several peaks on both sides, there are also large-caliber naval guns dismantled from some decommissioned old warships, many of which are more than 200 mm caliber, and these naval guns are dismantled and reinstalled here with the turret with the bottom ammunition feeding system. The Russians, who had clearly sensed the threat from China in 1900, had been running the fortress for seven years, and it seemed to them that it was impregnable, and that Nikolai had equipped his blood uncle with a large number of anti-aircraft weapons because of the airship's prowess in Europe.

"Order the reconnaissance aircraft to withdraw, transfer the bombers over, do not bring bombs and coagulation qiyou shells, directly replace the shabu forest shells and smoke bombs, the long-range cannon group is ready to fire, and use red smoke bombs according to the predetermined coordinates before to provide target guidance for the bombers." Duan Qirui, commander of the Third Army, said as he looked at the reconnaissance plane hovering in vain in the sky.

The snow did cause him a lot of trouble, and with the current season the snow wouldn't melt for months, so he would have to shell it without aerial reconnaissance, which would greatly reduce the effect.

The communications corps next to him immediately sent the order back to the rear base in Ningguta, and the Thunder bombers on standby on the field airfield immediately began to load and take off, and at the same time, on the heavy artillery position north of Shuangchengzi, a 155-mm field heavy cannon was also ready to open fire. Ten days ago, with the help of reconnaissance planes and maps, these heavy guns, which had a range of more than 25 kilometers, had been aimed at the fortresses of the Shuangchengzi fortress group, and of course shells of such caliber were not very lethal to those strong reinforced concrete fortresses. There have been many artillery battles between the two sides these days. Not only can it not effectively destroy the Russian fortress at all, but it is even easy to suffer from the retaliation of their large-caliber artillery, except for these one-five-five heavy additions, it is basically difficult for other artillery to suppress the Russians' heavy artillery in range, after all, a large part of their heavy artillery is also made in China.

Duan Qirui's real weapon against the Shuangchengzi Fortress was beside him, and on the concrete gun emplacement, which the sappers had spent more than twenty days pouring over, ten 540 mm giant self-propelled mortars called water tank guns by the soldiers were on standby.

The crane attached to the tail of the gun uses a special grappling hook to lift a warhead weighing one ton and more than two meters long from the ammunition truck modified from the chassis of the combat vehicle, carefully placing it in the slot behind the gun chamber, and then pushing the bomb lever to push it into the gun chamber and put it into the propellant pack packed according to different range standards, and then close the gun lock. Then the gunner who was operating the cannon began to adjust the pitch angle, and the ten super cannons slowly raised their disproportionately short barrels, large enough for an adult to drill into the huge muzzles of the cannon pointed into the sky.

All they need to do next is wait for the order to fire.

Soon the bomber that Duan Qirui needed flew over the head of the Shuangchengzi fortress, and then with the order of the artillery commander on the cannon position, a door of 155 mm heavy plus spewed flames at the same time, and the shells whistled across the sky, exploding eye-catching red smoke in the Russian fortress group nearly 20 kilometers away, and the bombers in the sky were waiting for the crew members. Quickly determine the approximate location of the target according to the plan of the Shuangchengzi Fortress in his hand, and then the belly bomb bay opened, and one after another smoke screen bombs and shaman forest bombs fell at the same time.

"What are the Chinese going to do?" Inside a dark bunker in the Twin Cities Fortress Group, Major General Kolov, the commander of the fortress garrison, watched in astonishment at the clouds of smoke that were rising outside from a narrow observation port. This heavy snow helped him greatly, and the Chinese bombers he was most worried about were useless because they could not distinguish those snow-covered bunkers, and he only had to worry about the heavy artillery of the Chinese, so that his defensive pressure was greatly relieved. However, he still couldn't understand why it was not the envisioned 280 shell that fell first but an inexplicable smoke screen, but he quickly remembered the latest information he had just gotten.

"Quick, order all to put on gas masks. It is possible that the Chinese will use the new style of dugas. He reached out and grabbed his gas mask and shouted at the same time, after China entered the war, the French, who no longer had to keep secrets, immediately released the news that their shaman was from China, not only to remind their allies, but also to provoke the Germans, of course, this must be meaningless, William is not qualified to care about this problem at this time.

However, Major General Kolov's order was still a little late, and the shamans mixed with the smoke screen had poured into the fortresses in large numbers, and before putting on gas masks, there were already a large number of Russian soldiers convulsive and falling, fortunately, the facilities were perfect, and the vents were quickly closed one by one, and soon the damage of the gas was insignificant, and then the poisoned soldiers were carried away one by one, and then the reserve soldiers filled their vacancies.

Looking at the Shuangchengzi fortress group that had completely disappeared in the smoke, Duan Qirui nodded with satisfaction, he couldn't do it, although those water tank cannons were powerful, but unfortunately the range was too short, even the maximum charge was only ten kilometers away, and the range was already very safe ten years ago, but in this era when the army artillery was farthest more than twenty kilometers, it was difficult to ensure safety, especially in the Shuangchengzi fortress group, there were four 280mm howitzers purchased from China, It is almost the same as the water tank cannon in terms of range and ballistic characteristics, and it is easy to damage it, so he must blindfold the Russians before beating them.

"Fire!" He turned his head to the commander of the heavy artillery brigade who was on standby, and the latter immediately gave the order to the waiting artillerymen to open fire, and then he saw the ten water tank cannons spew flames at the same time in an instant, and then he felt the whole earth shake violently, and the explosion of the propellant hit the ears of the people around him like a heavy hammer, and even the battle-hardened generals couldn't help but scream, And those huge shells roared into the sky at a speed of more than 200 meters per second, and then smashed into the Russian fortress in the distance like meteors with inertia in a high-throw trajectory.

Major General Kolov was depressed at this time about the more than 1,000 casualties caused to him by Sha Lin's anger, although the casualties were not large, but this situation of being slaughtered by others was very helpless.

"What sound?" He looked up blankly, a strange whistling sound overhead was approaching, and the staff officers around him looked at each other, but then they felt as if the ground had been smashed with a huge hammer, and a loud bang was heard at a nearby fortress. It wasn't an explosion, it was like the sound of something collapsing, and before they could react, suddenly an explosion sounded as if the sky was falling apart, and then in just a dozen seconds, the same nine explosions kept ringing, although they were not hit, but the nearby explosion still made Kolov's command tremble violently, and even cracks appeared in the concrete protective layer above his head, so you can imagine how terrifying this explosion is.

Kolov and his officers were stupid, they didn't even understand what was exploding, the explosion of the battleship's main guns was like a child's artillery battle compared to this, except for the explosion of the ammunition depot, they really couldn't imagine anything with such great power, because the smoke obscured their vision, and they couldn't see if it was a bomb dropped by the plane overhead, but the bomb dropped by the plane would certainly not be so accurate, and the smoke also obscured the plane's vision, Moreover, there was more than a dozen centimeters of snow above their heads, and he didn't know that the water tank cannon on the opposite side was aimed at the coordinates on the map.

Although it is impossible to carry out calibration in this case, but fortunately, those artillerymen have an extremely accurate layout map of the fortress group of Shuangchengzi, and from this fortress group to start construction, this is the main reconnaissance target of the Chinese military intelligence department, it is too simple to get this kind of thing in the Russian bureaucracy that is rotten to the bone, and the Chinese Army General Staff even has the design drawings of these fortresses, let alone the simplest layout drawings.

In the first round of shelling, one of the ten huge shells hit the target, and then smashed through the protection of the reinforced concrete like a wooden plank, and then the 200 kilograms of antimony charge inside exploded instantly, not only turning the fortress directly into a huge crater, but also directly collapsing the two small bunkers adjacent to it.

In fact, using 540 artillery to deal with these fortresses is completely a knife to kill chickens, although Alekseev repaired these fortresses according to the standard of defense against 305 guns, but because of the layers of corruption and deduction of the person in charge, of course, including his own, in the end these fortresses are estimated to be unable to prevent even 280 shells, and the quality of the Russian fortress is not comparable to Sevastopol more than 30 years later, but Yang Feng's water tank cannon is not inferior to the mustache's Karl cannon, or even more ruthless, because he knows that there is no need to care too much about penetrationThese shells contained an even larger charge, a full 250 kilograms of a mixture of antimony, antimony, and thermite. (To be continued......)