In the 1990s, Zhang Xueliang said in an interview that Feng Jun was very effective under the leadership of Chen Mao. He also said that if Chen Mao hadn't died, the Japanese might not dare to attack the three northeastern provinces. From Zhang Xueliang's words, we can hear that Chen Mao in his mouth is a very powerful commander. So, who is this Chen Mao? In fact, Chen Mao in Zhang Xueliang's mouth was none other than Guo Songling. As we all know, Guo Songling used to command the army, but later he was killed by Zhang because of rebellion, and his body hung on the wall for three days. So, why did Zhang Can Xueliang, who is in the army, say such a thing?

1883, Guo Songling was born in Fengtian. Although Guo Songling later became a general in Fengxi, in fact, Guo Songling didn't want to join the army at first, but wanted to gain fame. In the first twenty years of his life, he concentrated on his studies and wanted to win fame and honor. But 1905 the Russo-Japanese War broke out, and the battlefield of the Russo-Japanese War was Guo Songling's hometown, so Guo Songling could no longer concentrate on his studies. In addition, artillery fire also brought great disaster to my hometown. He was very moved when he looked at the destroyed houses and the murdered villagers. Therefore, he no longer wants to enter the official career, but is determined to defend his country. He entered the army school to study.

After graduating from the Army Academy, he joined the army, but his military career was not very smooth. At first, Zhu Qinglan was mainly active in Sichuan, but due to the outbreak of Wuchang Uprising, Zhu Qinglan could not stay in the Sichuan Army, so Guo Songling had no choice but to return to the northeast and work as an instructor in Jiangwutang. It was also in Jiangwutang that he met the noble Zhang Xueliang who changed his life. Zhang Xueliang has always admired Guo Songling. Although they are mentoring, they have a good personal relationship. On the recommendation of Zhang Xueliang, Guo Songling joined Feng Department and became one of the officers.

Subsequently, Guo Songling was more heroic in the anti-bandits operation, which made great contributions to Feng Bu. Nevertheless, in 1925, Guo Songling chose to fight Feng, but Zhang was attacked by Feng Jun and the Japanese army on both sides, and finally died in the battlefield. His body was hung on the wall and exposed for three days. In this case, Guo Songling was originally the main force of Feng Jun, so why did he finally embark on the road against Feng Jun? After Guo Songling joined Feng Jun, he was quickly promoted to head of the regiment with his own military strength. 1920, in the direct Anhui War, Guo Songling directly defeated two brigades of the Anhui Army with one regiment. Therefore, Zhang looked at him with new eyes and promoted him as a brigade commander.

Later, in many battles, Guo Songling gave full play to his military talents and turned defeat into victory again and again, which made Zhang more optimistic about him and was promoted to deputy commander in a blink of an eye. However, although Guo Songling is already the deputy commander, he said that the relationship with the military is not very good, especially with Jiang Dengxuan, which is the reason why Guo Songling's fate deviates from the original track. Guo Songling and Jiang Dengxuan are both subordinates of Zhu Qinglan, and they can be said to be old colleagues. In the battle of Zhifu, Jiang Dengxuan's first army first sent back a good news. At this time, Zhang Xueliang ordered Guo Songling to lead the troops to reinforce. Is this command, others think that Guo Songling is stealing work.

After the meeting, the commander of the First Army sneered at him. Angry Guo Songling said that he would never touch anyone's light and decided to attack from Shanhaiguan. His choice ruined the whole plan. Therefore, leave this matter to Zhang and hold a grudge against Guo Songling. After the war, other armies were rewarded by Zhang, but Guo Songling didn't. Jiang Dengxuan took his share, which made Guo Songling hate him even more. If we want to say why Guo Songling rebelled against Feng, it is also very important that Guo Songling discovered Zhang's cooperation with Japan, and after learning about Zhang's plot with the Japanese, he simply could not tolerate Zhang's traitorous behavior. So he held high the patriotic banner and opposed it.

But no matter what reason Guo Songling rebelled against Feng, what he did seriously weakened the military strength of Northeast China, which is also the reason why Japan dared to attack the three northeastern provinces. If he hadn't rebelled and died, maybe the Japanese really wouldn't dare to attack the three northeastern provinces. Unfortunately, without if, history cannot be changed.