Life and death explosion

An explosion occurred in a warehouse in the north of Binhai City, causing a sensation throughout the city. During the investigation, Xu Zhongmin, the leader of the special police team's explosive disposal team, found that the remnants of the explosion at the scene were very similar to the June 1st incident eight years ago. Eight yearsPreviously, a malignant robbery and explosion occurred at a jewelry store in Binhai City. Xu Zhongmin's bomb disposal failed, resulting in the death of suspect Chai Zhifeng. The bandits A Gui and Diao Shu took the opportunity to escape the scene and disappeared from sight. This is known as' Six 'One by one cases. Xu Zhongmin felt guilty in his heart and had taken care of Chai Zhifeng's mother and younger brother Chai Zhifei for many years. The Public Security Bureau will handle this explosion case together with the June 1st incident and instruct Xu Zhongmin to work with the Criminal Investigation TeamQiu Jie established a special task force to jointly solve the case and engaged in a life and death battle against the criminals, racing against time. And in the early morning of the same day, A Gui, who was released from prison, illegally crossed over to Binhai City and met with Uncle Diao at a warehouse. A sudden explosion led to the deployment of people and horses from both sides of Gui Diao to compete and kill each other... Who is the real culprit behind all of this?