The Great Detective is a Chinese fantasy suspense detective film directed by Roy Chow, starring Han Geng, Yin Zheng and Zhang Huiwen, it is based on the Huo Sang Detective Stories by Cheng Xiaoqing. It was released in China on January 25, 2019.
Principal photography took place in Prague, Czech Republic and Shanghai, China. It began filming from 2 June to 8 September 2016, with additional shooting was completed in January 2017.