Wang (center) plays the role of a police captain who leads a team of officers to hunt down armed gangsters. [Photo provided to China Daily]

Set in southern China between 1991 and 1994, the film follows Wang's police captain who, alongside his fellow officers, sets out to face off against ruthless gangsters who use illegally purchased guns to rob banks and stores, causing the deaths of dozens of police officers and civilians in the process.

Meanwhile, Wu is no stranger to playing the villain, with some of his best-known baddies taking on Jackie Chan in New Police Story (2004) and Shinjuku Incident (2009). For this latest outing he has shaved his eyebrows and kept to a strict diet for the role.

In an earlier interview with domestic media outlets, Wu says his character in this film, Zhang Sun-depicted as a Cantonese-speaking, hippie-like hooligan-has a complex personality.

"I think he (the character) is not a common bandit. He has a sharp mind, enabling him to quickly discover holes in the security system of banks or stores. He takes robbery somewhat more as a profession than just stealing money, so he even tries to seek an honorable way to die when he realizes he has nowhere to escape."

Action crime film Caught in Time, starring Wang Qianyuan and Daniel Wu (pictured), currently tops the country's box office. [Photo provided to China Daily]

Near the end of the film, the most nerve-wracking scene occurs in a public bath. Forced to flee back to his hometown after all of his fellow gangsters and his mistress have been either killed or captured, Wu's character struggles during the last and most violent standoff against Wang's police captain.

For a scene that features both characters half-naked, wrapped in bath towels, the two actors trained for nearly 40 days to sharpen their moves for the stunts and stuck to a diet of mostly chicken breast to increase their muscle mass.

As a result, while shooting Caught in Time in Jiangmen, South China's Guangdong province, between late 2018 and early 2019, the location Wang and Wu "bumped into each other" the most was not the film set, but at the local gym. In order to build an atmosphere, the pair gathered fellow actors who were playing cops or gangsters and intentionally "split" them into two groups while training.

Some advanced screenings were held in mid-November, with most critics hailing the film as a successful mix of a typical Hong Kong gangster film and mainland real-life cases, propelling its scores on the country's two largest ticketing services, Maoyan and Taopiaopiao, to 8.8 and 8.7 points out of 10, respectively.