| The Darkest Sword | |
| Native Name: | Hei jian gui jing tian |
| Director: | Lung Chien |
| Producer: | Yuan Hsiang Wu |
| Starring: | Ching-Ching Chang Pin Chiang |
| Music: | Eddie Wang |
| Runtime: | 97 minutes |
| Country: | Hong Kong |
| Language: | Cantonese Mandarin |
The Darkest Sword, also known as Hei jian gui jing tian, is a 1970 Hong Kong action martial arts film directed by Lung Chien, produced by Yuan Hsiang Wu, and starring Ching-Ching Chang and Pin Chiang.
Tun-Shan is grieved because he unintentionally killed an enemy and doesn't want to fight anymore. Then, he destroys his sword. Meanwhile, Su-Chen, in love with him, convinces him to start fighting again.[1]