After the fall of the northeast, the people in the occupied areas were not willing to be enslaved by the Japanese and rebelled one after another, and many places set up anti-Japanese volunteer armies or guerrilla groups, the largest of which was the "Chaoyang Brigade" led by Sun Chaoyang. Sun Chaoyang felt very depressed. In a fit of rage, he resigned from the army, returned to his hometown and pulled up a team and made himself commander-in-chief.
Due to his certain command ability, after the establishment of the Chaoyang team, Sun Chaoyang led the team to fight several victorious battles in Bin County and Acheng area. The reputation of the troops spread at once, and the enthusiastic young people in the vicinity came to join the army, and some guerrillas and volunteers also joined the Chaoyang team. In this way, the Chaoyang team has developed rapidly, and soon reached more than 1500 people. At that time, Bin County was an important material transfer and supply base for the devils, and the activities of the Chaoyang team in Bin County seriously threatened the safety of the Rear of the Japanese Kou and made them restless.
In April 1933, Sun Chaoyang led his troops to Dongshan, Bin County, and prepared to rest here for a while. Unexpectedly, the traitors who broke into the Chaoyang team revealed this information to the Japanese army. The devils thought that this was a good opportunity to wipe out the Chaoyang team, so they sent more than 3,000 people from Binhai and Acheng to surround Dongshan with the cooperation of the puppet army. Sun Chaoyang hurriedly summoned the troops to a meeting to discuss the strategy of breaking the enemy, but everyone discussed for half a day and did not come up with a perfect strategy.
At this time, a groom stood up and said to Sun Chaoyang: "Commander, in fact, it is not difficult to break the enemy, the devils are making a big move this time, Bin County will inevitably be empty of troops, as long as we send a capable force to raid Bin County, the enemy will definitely withdraw its troops and break the siege." He then detailed the plan of action of how the troops would be deployed during the raid and how the forwards and defenders would be arranged. After all, Sun Chaoyang was a former battalion commander, and as soon as he heard it, he knew that this was a good idea, and immediately agreed, and let this groom direct the operation. That night, the squad, led by Ma Fu, quietly descended the mountain from the back mountain trail and went straight to the county seat of Bin County.
After arriving at the county seat, the squad posed as if they were going to attack the city, the military trumpet was blown very loudly, and the gunfire sounded like a burst. In the darkness of the night, the puppet army guarding the city did not distinguish between the truth and the truth, thinking that a large army had come down from the city, and hurriedly sent a report to the devils for help. When the devils heard that Bin County was besieged, they hurriedly withdrew their troops to the rescue, and Sun Chaoyang took the opportunity to lead his troops to break through. Afterwards, Sun Chaoyang personally sent someone to invite this groom to the headquarters, and very sincerely asked him for his true identity, and when he asked, he realized that this groom was the famous Zhao Shangzhi. Zhao Shangzhi was the leader of the Bayan guerrillas, which were severely dispersed by the Japanese army in January 1933. Zhao Shangzhi lost contact with the team, and only then did he come to Sun Chaoyang's volunteer army as a soldier. After learning of Zhao Shangzhi's true identity, Sun Chaoyang immediately appointed him as chief of staff, and the two of them worked together to fight a lot of good battles.