Why did Sun react so violently in the drug war?

Sun had a great reaction to the drug war, because it was the first time to do so.

"Drug War" subverts the routine of traditional police films with fascinating stories. The excellent stunts and photography of the film give the fierce gunfight an unexpected sense of reality. Unlike Death Money, which focuses on the social situation, Drug War is more bloody and cruel, and it is also more optimistic about the box office prospects of this film.

The plot of a play

Sun, the captain of Jinhai Anti-drug Brigade, has just completed the undercover task and successfully captured a group of drug dealers, but he met Louis Koo, who was injured in a car accident out of control in the hospital. With a keen professional sense, Zhang Lei decided that Timmy Choi was suspected of making drugs, and then found out the drug-making dens that had been bombed in a big mess.

At the same time, Guo Weijun (Wallace Chung) and Chen Shixiong (Li Guangjie), two anti-drug policemen from Yuejiang, followed the truck carrying drug raw materials and met them. They learned that the drug raw materials came from Chen-Piao Li, a drug Lord, and the consignee was Timmy Choi. In the face of the facts of the crime, Timmy Choi confessed and offered to help the police capture Li Zhenbiao, making meritorious service.