In fact, Zhang Zuolin and Feng Jun have always been clamped down by the Japanese, or that Feng Zhang and the Japanese are in a state of mutual restraint, and once this state is broken, the consequences will be unimaginable.
The Japanese have been entrenched in the northeast for a long time, before Zhang Zuolin was founded, they had already obtained the Liaodong Peninsula through the signing of the "Maguan Treaty", although later forced by the "three countries to intervene in the Liao", the Japanese had to spit out the fat meat of Liaodong, but their power has since penetrated into the northeast.
That is to say, the Japanese influence in the northeast predates Feng Zhang, so the depth of their influence in the northeast can never be underestimated, and Zhang Zuolin can be said to have a deep understanding of this.
In 1925, Guo Songling suddenly chose to cooperate with Feng Yuxiang, put up the banner of "anti-feng", and fought with Zhang Zuolin.
Guo Songling has a military talent, whether it is training troops or commanding troops to fight, it can be said that he is a good hand, and the most elite unit in the Feng army is brought out by Guo Songling, which Zhang Xueliang also admitted frankly in his later years.
Therefore, Guo Songling's anti-Feng not only caused fengjun to lose an elite division, but Zhang Zuolin in turn was beaten by Guo Songling and almost planted on Guo Songling's hands. If Zhang Zuolin had not sought help from the Japanese in time, Feng Zhi would have changed his surname to Feng in 1925.
Just when Guo Songling was excitedly pursuing Zhang Zuolin, he did not expect that the Japanese suddenly came out and hit him by surprise, and Zhang Zuolin turned defeat into victory and saved Feng Zhang.
From this, we can also see how strong the Strength of the Japanese in the Northeast is, so Zhang Zuolin does not dare to casually find trouble for the Japanese, and can only say that he will try his best to ensure "mutual non-aggression."
In addition, the rise of Zhang Zuolin is also inseparable from the support of the Japanese.
During the Russo-Japanese War, Zhang Zuolin, the head of the small "insurance team," and people like Feng Delin were sandwiched between Japan and Russia; although the Qing government chose neutrality and no one helped, in the final analysis, they were also helping Russia, and people like Zhang Zuolin and Feng Delin thus became tools for the Qing government to indirectly participate in the Russo-Japanese war.
Zhang Zuolin also voted for the Russian army at first, but later saw that the Japanese army had the upper hand, and in order not to die with the Russian army, he turned his head and threw himself on the side of the Japanese army, thus establishing contact with the Japanese.
Later, Zhang Zuolin was recruited by the Qing government, and he desperately made meritorious contributions and wanted to climb up as fast as he could, but before he could climb to the position he wanted, the Qing government "slammed" down.
Although Yuan Shikai appointed him commander of the 27th Division, in fact, he did not receive much substantial benefit except for this well-deserved title. If he wanted to continue to develop his power, he could only rely on the Japanese, and to be honest, which warlord at that time did not have the support of the great powers behind it?
Zhang Zuolin's most desperate desire to get the benefits from the Japanese was weapons and equipment.
He is in a chaotic world, he wants to stand firm, he wants to become the protagonist of the times, he wants to lay a downside, he can't do without a gun!
It was also because of the weapons and equipment obtained from the Japanese that Zhang Zuolin was able to develop rapidly and became the "King of Northeast China" step by step.
However, Zhang Zuolin also jumped into the pit of the Japanese, because the Japanese could not stupidly give weapons and equipment to Zhang Zuolin for no reason, which also caused Zhang Zuolin to be subject to the Japanese in weapons and equipment.
In order to get rid of the Restrictions of the Japanese on himself, Zhang Zuolin has also been actively trying to find ways, which later led to the Shenyang Arsenal, which was the largest in China at that time.
Zhang Zuolin deliberately put Yang Yuting in charge of the expansion of the arsenal, for which he also invested countless financial resources to purchase machinery and equipment from Germany, hired German technicians to improve the production line for himself, and specially set up an ordnance primary school and an ordnance school to cultivate reserve talents for the arsenal, which shows how much he attaches importance to the arsenal.
At the same time, he also set up a scientific research society in the arsenal, specializing in the research of ordnance science and technology.
Although it only took a few short years, the strength of the Shenyang Arsenal did develop rapidly, and it also played a big role in Zhang Zuolin's expansion of the Feng family.
However, although the Shenyang Arsenal has achieved considerable results, it still cannot be compared with the technology and productivity of the Japanese, after all, Zhang Zuolin's arsenal can only be regarded as just starting out, while the Japanese have been ahead of the curve for decades.
Therefore, Zhang Zuolin still could not completely get rid of the Japanese, and naturally there was no talk of the Japanese going to war.
Of course, although Zhang Zuolin could not completely get rid of the Japanese's clamping on himself, he actively developed the military industry while striving to develop the economy, and his strength continued to rise, and later he became the last family member of the Beiyang government, which also made the Japanese quite jealous of him.
Yes, Zhang Zuolin took advantage of the Japanese, which in turn made the Japanese jealous of him.
Before Zhang Zuolin withdrew from Beijing in 1928, the Japanese still used this as a threat to want Zhang Zuolin to sign a traitorous treaty, but Zhang Zuolin not only directly rebuked the Japanese for "pinching their necks for benefits", but also signed a "reading" character on the treaty document to tease the Japanese.
How many people could have this courage at that time?
How jealous are the Japanese of Zhang Zuolin? Obviously, they had already created the "Huanggutun Incident", but as soon as they heard that Zhang Zuolin had not been killed by the explosion, but had only suffered a slight injury, they did not dare to act rashly, so that Zhang Xueliang returned to Shenyang to accept the Feng clan and announced the news of Zhang Zuolin's death.
Therefore, although Zhang Zuolin did not dare to fight the Japanese, the Japanese were also jealous of Zhang Zuolin, and the two sides were in a state of mutual restraint.
However, once this state of affairs is broken, the Feng clan may be completely defeated and annexed by others, but the Japanese forces in the northeast will also be hit with unimaginable blows, and neither Zhang Zuolin nor the Japanese will be able to accept such consequences.
Therefore, even if Zhang Zuolin occupies a favorable geographical position, he will not easily choose to go to war with the Japanese.