A 1967 Cantonese language action film directed by Cheung Wai-Gwong, starring Connie Chan, Adam Cheng and Liu Chia-Liang. Ming-Wai & Ming-Sing, a brother and sister (dual roles played by Connie Chan) who must go undercover in a gang to rescue their uncle.

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Main Cast: Connie Chan Po-Chu, Sek Kin, Adam Cheng Siu-Chow, Lam Kau, Yip Ching, Ma Siu-Ying, Alice Au Yin-Ching, Lok Gung, Sze-Ma Wah-Lung, Tsang Choh-Lam

Director: Chiang Wai-Kwong

Writer: Ling Hon

Editor: Yu Shun

Cinematographer: Ngai Hoi-Fung

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