The three groups of people met at the northwest corner of Russky Island at about three o'clock in the morning, more than three hours before dawn. After Luo Yue, Yang Rui, and Zhou Xinghan met, they decided to take advantage of this time to cross the East Bosphorus Strait and land on the Amur Peninsula. Because the scope of the Russian island is too small, it is not conducive to the hiding of the team, and there is not much room for maneuver, so it is better to take advantage of the current time to rush to the Amur Peninsula to hide, so that even if it is discovered by the Russian army, the KPA will have much more room for maneuver. Moreover, the physical strength of the personnel is also sufficient, and it is completely possible to rush to the Amur Peninsula before dawn and hide in the place.

After deliberating on the decision, the trio immediately left Russky Island with their team, crossed the frozen sea, and reached the southwestern coast of the Amur Peninsula at about 5 a.m.

Originally, during the freezing period every year, the Russian army would dispatch icebreakers to open a waterway for Vladivostok, at least allowing small and medium-sized ships to enter and exit, but because of the current war between Japan and Russia, there was a blockage operation in Lushun, so the port of Vladivostok did not break the ice this year, and the Russian army believed that freezing could prevent the Japanese attack. As a result, Vladivostok was heavily guarded throughout the winter.

Although Russia has occupied Vladivostok for nearly 50 years and has spent a lot of effort to develop, first, Russia's national strength is indeed limited, and Vladivostok is too far away from the main part of Russia, so the scope of development is not large; second, the population of Vladivostok is too small, before Luo Yue and others crossed, the population of Vladivostok has just exceeded one million, and now the population is naturally less, only about 300,000, the development of Vladivostok is mainly around the Golden Horn, and other places can not be taken care of, on the Amur Peninsula, there are a large number of jungle areasIt is very easy to hide more than 100 people. Of course, this is Russia's territory after all, so Luo Yue and the others did not dare to be careless, and guarded the perimeter of the rest point, so that they dared to rest assured.

And after dawn, the temperature rose, and the soldiers also built three fires, boiled water, and put the rations they carried into boiling water to cook. Because the wind on the beach is strong, you are not afraid of the smoke from the fire to reveal your whereabouts.

Luo Yue, Yang Rui, and Zhou Xinghan got together and exchanged the results of their surveys and checks. After the data of the three people converged, the situation on Russky Island was basically clear. And Luo Yue was also very satisfied, with this accurate information, he was also completely sure of attacking Russky Island.

Military enthusiasts in the old time and space know such a concept, in the era of heavy ship giant artillery, the naval artillery under the same conditions can not beat the coastal defense artillery, of course, there are some in-depth enthusiasts will raise a question, theoretically speaking, the coastal defense artillery and naval artillery can only be regarded as each has its own strengths, the defense of the coastal defense artillery is stronger, but the target is fixed, and the defense of the warship is poorer, but the warship can be moved, it can be said that the coastal defense artillery hits the moving target, and the warship hits the fixed target, so the hit rate of the naval gun must be higher. In this way, no one has an absolute advantage in shore defense artillery or naval artillery.

In fact, the hit rate of naval guns is higher than that of shore defense guns, this view is wrong, although the shore defense guns are fixed, but there will be some interference around the perimeter of the shore defense fortress, such as trees, Mountains and rocks, etc., as well as the smoke produced by the explosion will interfere with the aiming of the naval guns, and the position of the coastal defense fortress is usually built at a high place on the coast, so the aiming of the naval gun must not only calculate the plane distance, but also calculate the height, which will increase the difficulty of the aiming of the naval gun; and although the warship can move freely on the sea surface, but to attack the fortress, it must be around the fortress activities, so the movement of the warship is regular, and the sea surface is unobstructed, without the slightest obstruction, and it is almost equal to an absolute horizontal plane, which gives the aiming of the coastal defense artillery is actually easier than that of the naval gun, and the coastal defense artillery has an absolute advantage in defense, this is the main reason why the shore defense artillery is superior to the naval gun.

In order to defeat the coastal defense artillery, the naval artillery must have accurate data on the location and altitude of the fortress, and it cannot only rely on the aim of the naked eye and optical instruments, but needs personnel to conduct on-the-spot surveys, and only in this way can the biggest weakness of the coastal defense artillery not move can be fully utilized. This is what Luo Yue and others are doing now. Of course, Luo Yue and the others surveyed not only the location of the fortress, but also the location of the landing, the key points to be occupied after the landing, and so on.

After a half-day rest, the KPA resumed its movement in the afternoon and began to survey and reconnoiter Vladivostok. The area of Vladivostok is, of course, much larger than that of Russky Island, and the crowd circled around Vladivostok, surveying the fortresses, fortresses, and batteries of Vladivostok, which took three days.

At this time, the survey tasks for Vladivostok and Russky Island had basically been completed, and Luo Yue and the others could also return to Kunming and Qingdao. But Luo Yue believes that at this time, he cannot return, but should go north along the Amur Peninsula and continue to survey until he reaches Shuangchengzi.

Located about 80 kilometers north of Vladivostok, Shuangchengzi is also the old territory of China, which was ceded to Russia by the Sino-Russian Treaty of Beijing in 1860, along with Vladivostok, and is known as Ussuriysk in Russian. Because it is located between the Sikhote Mountains, the Changbai Mountains and the Xingkai Lake, at the confluence of the Suifen River, the Rakovga River and the Suputiga River, it is now an important transportation hub city of Russia in the Far East, connecting the two strategic points of Boli and Vladivostok, and is also the eastern junction of the Trans-Siberian Railway and the Eastern Eastern Railway.

The eastern terminus of the Trans-Siberian Railway is Vladivostok, and as we all know, the geography of modern China is like a rooster, and the northeast region is the position of the chicken's head, so after the Trans-Siberian Railway arrives at Chita, it goes around a large arc along the Sino-Russian border to the north to reach Vladivostok, and the Eastern Railway is built by Russia as a supplement to the Trans-Siberian Railway, of course, Russia built the Eastern Railway in order to facilitate Russia's control of eastern China.

The Middle East Railway is roughly in the shape of "D", divided into two lines, the northern trunk line and the South Manchurian branch line, the northern trunk line is the upper horizontal of the "D" character, which communicates with the Trans-Siberian Railway, the west end is separated from the Trans-Siberian Railway by Chita, connects Manchuria into China, crosses Heilongjiang and Jilin provinces, exits to the Suifen River, connects with Shuangchengzi, connects with the Trans-Siberian Railway again, until Vladivostok; The two provinces of Liaoning lead to Lushun, which is a horizontal and vertical railway line, which basically runs through the three northeastern provinces and regions, and Shuangchengzi is a key point of construction on these two important railways.

If Russoya Island is the sea gateway of Vladivostok, then Shuangchengzi is the land gateway of Vladivostok, if you want to reach Vladivostok from land, you must pass through Shuangchengzi, and the Russian Vladivostok defense line has been stretched to Shuangchengzi, of course, the direction of defense is towards the Chinese side, mainly to prevent China from recovering Vladivostok, so after occupying Vladivostok, you must immediately march to capture Shuangchengzi, otherwise you cannot be considered to have completely occupied Vladivostok. And in Luo Yue's plan to attack Vladivostok, the attack on Shuangchengzi was also made part of this plan.

When the Kunming ship dispatched drones to conduct aerial reconnaissance in Vladivostok, it also conducted reconnaissance of Shuangchengzi, so this on-the-spot survey should also include Shuangchengzi, and Luo Yuecai advocated continuing to go north to survey Shuangchengzi. And now, although it has been three days of operation, the whole team is in good shape, and with only one more day of rest, the whole team can recover to a better state and continue to complete the survey of Shuangchengzi. And judging from the situation on Russky Island and Vladivostok, the Russian army's garrison was very lax at this time, so it was also a good time to survey Shuangchengzi.

The only difficulty was that after three days of operation, the rations carried by the whole team were not much, and it was definitely impossible to complete the reconnaissance mission of Shuangchengzi, but this was not too much of a problem, because the helicopters on the Kunming ship could replenish the troops. The rations that the troops can carry are only 5 or 6 days at most, which may not be enough to support the completion of the reconnaissance mission, but the special forces have carried out strict field survival training, even in this season, even if it is in the ice and snow, it is not difficult to find food in the field to support 3 or 5 days, and there is really no way, even if the team arrives in Shuangchengzi, it can also use helicopters to replenish, so the supply problem can be easily solved.

Yang Rui and Zhou Xinghan saw that Luo Yue's determination had been decided, and they had no objections, after all, Luo Yue was the person directly responsible for this reconnaissance operation, so the specific reconnaissance task was naturally decided by him, and anyway, he had already come out, so he would complete the reconnaissance of the area that should be reconnoitred.

So Luo Yue immediately contacted the Kunming ship, and the Kunming ship immediately prepared enough food for them, which was delivered by helicopter at night, and the team got food supplies, rested for another day, and then set off on the road again.

The team walked north along the railway line for three days until it reached the shore of Xingkai Lake. Xingkai Lake was originally an inland lake in China, and now it has become the boundary lake between China and Russia, which has not changed until Luo Yue and others crossed, and at this time the ground has been covered with thick snow, and the surface of Xingkai Lake is also covered with thick ice.

However, although the Russian plan was large, the actual progress was very slow, and this defense line was not completed at all, and many places did not even start construction, so Luo Yue thought that this defense line was not difficult to break.

Luo Yue was very satisfied with the results of the entire survey, and the team turned back on the shore of Xingkai Lake. However, on the second trip, the team walked from the west coast of the Amur Peninsula, and on the return trip, it went back along the east coast of the peninsula and made another reconnaissance.