Although according to intelligence, the Jin Suijun were building airstrips in Shizui Village in the Wutai Mountains and Changzhi in southern Jin, but there were also airfields in Datong and Linfen, which does not mean that Yan Xishan would definitely land in Shizui Village and Changzhi.

Judging from Yan Xishan's always cautious and cautious surname, these two newly built airstrips are likely to be Yan Xishan's old suspicions. However, after Yan Xishan's trumpeting, it was really a difficult problem to determine where he would land.

Datong is now the location of the military headquarters of Yan Xishan's nephew Yang Aiyuan's 34th Army, and Suiyuan still has Fu Zuoyi's 35th Army, and he is not afraid that Song Zhewu will send troops to arrest him, so going to Datong is naturally the most reassuring and safest for Yan Xishan.

It is also very possible to get to Jinnan.

Jinnan not only has Xu Yongchang's 33rd Army and the remnants of the 32nd Army led by Feng Pengxi, but also several newly formed Reading Brigades, where heavy troops are gathered, and he is not afraid that someone will be unfavorable to him.

The most important thing is that Linfen in southern Jinnan is now the location of the Shanxi Provincial Political Axe, which is more convenient for Yan Xishan to control power, don't forget, Yan Xishan came back this time to make a comeback.

As for returning to the Wutai Mountains, it is not completely impossible.

Although it is far away from the power center of the Jin Suijun and Shanxi, it is not conducive to Yan Xishan to grasp the overall situation, but there is also an advantage, that is, Yan Xishan can say to the outside world, "He Yan Xishan has no ambition to return to Shanxi, he just came back to be a civilian." ”

In addition to these three places, Song Zhewu even suspected that Yan Xishan had a fourth place that he didn't know about to land.

However, not to mention the four locations, even three, with Song Zhewu's current ability, he can't take care of them, even two, he has to be poor to deal with.

Song Zhewu really couldn't make up his mind, so he had to summon three experts, Wu Jin, Gao Zhihang and Mike, to discuss.

But to Song Zhewu's surprise, the problem that seemed to him was a headache, and these professionals solved it in a few minutes.

Mike, Gao Zhihang, and Wu Jin, who had been working hard to study flying skills since he became the chief of the Air Force Corps, unanimously agreed that Yan Xishan could only fly from Dalian to Tianjin first, and then fly to Changzhi after refueling in Tianjin.

Their reasoning is simple. First of all, it is impossible for them to use a military plane to send Yan Xishan back to Shanxi, and that would be tantamount to making public the evidence of the collusion between Yan Xishan and Yue himself, and they can only use a civilian plane to send Yan Xishan. Moreover, the use of military aircraft to escort Yan Xishan, once discovered, will be very passive diplomatically.

Secondly, the reason why Yan Xishan could not fly directly from Dalian to Datong, Shanxi Province was because the distance was too far, the two places were 1,000 kilometers apart, and it was 100 kilometers away from Changzhi. Therefore, Yan Xishan's plane must land in Tianjin for refueling.

The flight range from Tianjin to Datong is more than 700 kilometers, and the distance to Wutai and Changzhi is also more than 600 kilometers, and now the range of the best civil aircraft is about 700 kilometers. Considering the impact of high-altitude turbulence during the flight, the actual range will definitely not reach more than 700 kilometers, and it will basically be around 600 kilometers. In other words, Yan Xishan could not fly to Datong.

Even so, when flying to Shanxi, the plane's fuel will be basically exhausted, and if there is a slight accident, even only rely on gliding to land, and to find the airport to land safely by gliding, it is not only necessary to maintain a high altitude, but also need to have a relatively gentle terrain around the airport. It would be dangerous if a plane running out of fuel was going to land in the mountains of five of them. On the contrary, the Changzhi Basin has a gentle terrain, and it is much safer to land there.

Therefore, only Changzhi is the most suitable airport for Yan Xishan to land this time.

In other words, they believed that even if Yan Xishan's plane could break through the blockade and interception of the Northeast Army and the Central Army, it would only be able to land in Changzhi. Therefore, to intercept Yan Xishan, it is not necessary to block all the airspace east of Shanxi, as long as the airspace east of Changzhi is blocked.

However, what made Song Zhewu a little puzzled was that in the memory of his previous life, Yan Xishan should have landed in Hebian Village? Could it be that Yan Xishan also landed in Jinnan first, and then returned to Hebian Village? Or do I already have a long-range plane?

It's just that Song Zhewu can only keep this question in his heart, and it is impossible for him to ask these three people for an explanation.

Based on this doubt, Song Zhewu did not dare to absolutely believe the opinions of these three experts, and insisted on demarcating the Wutai Mountain Area, where the riverside village is located, within the blockade zone.

But to Song Zhewu's great surprise, despite all his efforts, Yan Xishan still returned to Shanxi on a small civilian plane, which not only passed the interception of the Northeast Army Air Force, but even set a record for the long range of a civilian aircraft, and even flew more than 700 kilometers from Tianjin to Datong.

This incident made Song Zhewu puzzled, so he instructed Wang Xu to try his best to find out how Yan Xishan did all this.

It wasn't until a few months later that Song Zhewu figured out why.

It turned out that in order to ensure that Yan Xishan could safely return to Shanxi before September, Tu Feiyuan still made a lot of efforts, and after repeated studies by the officers of the Eastern Army Air Force, he and Yan Xishan decided to modify a private small cargo plane.

In order to increase the range, they set up an auxiliary fuel tank in the cargo hold, which was enough to ensure that the aircraft could fly from Tianjin to Datong.

As for the airports in Changzhi and Shizui, it was Yan Xishan who instructed Yang Aiyuan and Sun Chu to do it behind Xu Yongchang's back, in order to prevent the news that he was going back to Shanxi from leaking, so as to confuse people who wanted to be unfavorable to him.

When Yan Xishan landed in Tianjin on this modified cargo plane to refuel, the people from the Tianjin secret service agency who received an urgent telegram from Tufeiyuan, who was still in Dalian, hurried to stop Yan Xishan, who was in a hurry to fly away.

Tu Feiyuan told Yan Xishan that the news that he was going back to Shanxi had leaked, and if Yan Xishan insisted on leaving, he was advised to wait in Tianjin for a day, and that experienced pilots sent by the Kwantung Army would send him back to Shanxi tomorrow morning.

According to the news sent to Yan Xishan by Yang Aiyuan, Sun Chu and others, Yan Xishan felt that Xu Yongchang was not thinking about Jin Suijun, let alone for the sake of him Yan Xishan, judging from Xu Yongchang's actions, Yan Xishan thought that Xu Yongchang was thinking about Chiang Kai-shek, which is very bad, and in the long run, it is difficult to say whether this Jin Suijun will still be surnamed Yan Ke.

Now, according to the news leaked to him by his old classmate Tu Feiyuan, he said that the Kwantung Army was going to make a big move in the northeast in the near future, and this was an excellent time for him to return to Shanxi to once again grasp the power of the Jin Sui Army. Although Yan Xishan didn't know what big moves the Kwantung Army would have, looking at Tu Feiyuan's meaningful demeanor, how could Yan Xishan, an old fox, not understand.

Even Tu Feiyuan was willing to reveal such an extremely confidential military secret to him, and his purpose was very clear to Yan Xishan, it was definitely not that this old classmate thought of friendship, but thought that he would use him Yan Xishan to obtain more benefits in North China in the future. This was already felt in the past few years when he was in contact with the Kwantung Army.

Yan Xishan believes in pragmatism, he will do anything that is beneficial to him, and he doesn't care much about other things. What's more, as long as he returns to Shanxi, it will be easy to do, and what he wants him to do in the future is not up to him, it depends on how he Yan Xishan weighs the pros and cons.

It's just that the immediate priority is that he, Yan Xishan, must return to Shanxi first and regain the leadership of the Jin Sui army, otherwise everything is utopian.

Therefore, Yan Xishan is now like an arrow. However, if there is a danger to his life on this trip, no matter how urgent it is, Yan Xishan will not take this risk, after all, the surname is the most important thing.

In the afternoon of the same day, Tu Feiyuan personally took a plane with a pilot to Tianjin, and after some careful arrangements, taking advantage of the favorable conditions that North China would be clouded at more than 3 o'clock in the morning and the line of sight would be very clear at 5 o'clock, he decided to take the risk and take off at 3 o'clock in the morning of the next day, taking advantage of the fact that the air force of the Northeast Army would not patrol in the air in the early morning, pass through the air blockade line of the Northeast Army on the first line of Beiping, first fly directly to the north, and after five o'clock it will fly between the Great Wall and the grassland, and then rely on these two references. Then turn to the west and go straight to Datong.

Because the news of Yan Xishan's return to Datong was tightly sealed by Yang Aiyuan, Song Zhewu did not get the news until more than 16 o'clock in the afternoon.

Since Yan Xishan was not intercepted, according to the meaning of Wu Jin and Gao Zhihang, there was no need for others to know the truth of this mission, and they only announced to the public that this was an exercise, and now the exercise is over.

The main reason why Wu Jin and Gao Zhihang did this is that among the almost 2,000 pilots and cadets of the Air Force Corps, there are not only many people from Shanxi, but the most important ones are the former Yan Xishan Jinsui Army Air Force, and many of these people are middle- and high-ranking cadres in the Air Force Corps.

Wu Jin and Gao Zhihang believe that if they know about this matter, they may have adverse effects.

But Song Zhewu didn't think so, he felt that this matter had to be told to Zhong Jihan and a few people. Because, even if we don't tell them the truth about this matter now, they will make associations about the flight back to Shanxi from Yan Xishan in the future, and I am afraid it will be worse.

It is better to take advantage of this incident to pour some dirty water on Yan Xishan, so that the people of the original Jin Suijun Air Force, especially Zhong Jihan, Feng Baolun, and Wang Fuheng, can really return to their hearts; Second, it can deal a blow to Yan Xishan's prestige among the people of Shanxi.

In particular, the September 18 incident is about to occur, and public opinion throughout the country will severely condemn Yue himself's aggressive acts, and will deeply hate those who have ties with him, and this will be a very strong blow to Yan Xishan.

Although even Song Zhewu didn't believe that Yan Xishan had surrendered to Yue himself now, after all, Yan Xishan had several negotiations with Yue himself in the Anti-Japanese War, and he would not bend him by pouring some dirty water on him.

(To be continued)