Well, the movie Marshall is indeed rooted in true events. It fictionalizes and dramatizes certain aspects for cinematic effect, but the core story is based on reality.
Yes, Marshall is based on true events. The filmmakers did extensive research to ensure the story was as accurate as possible while still making it entertaining for the audience.
The main cast of the movie included Wang Qianyuan, Daniel Wu, Chun Xia, and Wei Shiya. The other actors included Dali, Hu Zicheng, Hong Junjia, Ji Huanbo, Pang Yunong, Da Youwei, Kurata Baozhao, Wei Ziyun, and Chien Tsao. The film was a crime action film produced by Han Sanping and directed by Liu Haoliang. It was released in mainland China on November 20, 2020.
The cast list for the movie included Aaron Kuo, Qianyuan Wang, Zhang Jingchu, Guo Tao, Wang Baoqiang, Zhang Yi, Ning Jing, Xiao Yang, Li Chen, Zhang Han, Yang Cai, etc.
The cast list of the movie "Exterminate Violence" included Wang Qianyuan (as Zhong Cheng), Wu Yanzu (as Zhang Sun), Chun Xia (as Yang Wenjuan), Wei Shiya (as Chen Qian), Dali (as Cao Gang), Hu Zicheng (as Qi Bing), Hong Junjia (as Chen Xiao), Ji Huanbo (as Sha Pi), Pang Yunong (as Mastiff), Da Youwei (as Zhao Peng), Kurata Baozhao, Wei Ziyun, ChienTsao, etc.