Follows the story of underground workers who risked their lives to send intelligence and defend the motherland, set after Japan's attack on Pearl Harbor when the Wang Jingwei regime declared war on Britain and the U.S.
Unfortunately the movie Hidden Blade is not yet available on HBO Max.
| Directing | Er Cheng | Director |
| Writing | Er Cheng | Writer |
| Production | Yu Dong | Producer |
| Crew | Fu Ruoqing | Presenter |
| Production | Jiang Xiao | Associate Producer |
| Crew | Li Jie | Presenter |
| Camera | Cai Tao | Director of Photography |
| Production | Zhao Haicheng | Producer |
