Drama | Dec. 1, 1949
Drama | Dec. 1, 1949
| Producers | Northeast Film Studio |
| Original title | 无形的战线 |
| Directors | Ban Lu, Ming Yi |
| Writers | Ban Lu, Ming Yi |
as Scout commander
as Li Tian-Min
as Scout
as Cui Guo-Fang
as Zhou Shao-Mei
as Commander Hu
as Xiao Ling
as Zhou family maid
as Sun Fei
as Young carver
as Secretary Ma