With parents coming from Hunan (Henan), originally named Lei Qiu-Si, Shih Szu was born in Taiwan. She joined Shaw Brothers in 1970 and appearing as a martial arts heroine. Acclaimed by a wide range of audience, Shaw Brothers regarded her as the next Cheng Pei-Pei. As such she appeared in many martial arts movies which included "The Rescue", "The Lady Hermit", "Heroes of Sung", "The Villains", "The Bloody Scape" and "Lady of the Law" etc. Her agility and skills established her position as one of the top female martial arts stars. After starring in "A Deadly Secret" in 1980, she left Hong Kong and continued her filming career in Taiwan. She retired from the limelight in early 80s.

父母来自湖南（河南），原名雷秋思，出生于台湾。她于1970年加入邵氏兄弟，以武术女主角的身份出现。受到广大观众的赞誉，邵氏兄弟将她视为下一个郑佩佩。因此，她出演了多部武侠电影，包括《营救》、《隐士女》、《宋英雄》、《恶棍》、《血腥景观》和《法律女神》等。她的敏捷性和技巧奠定了她作为顶级女子格斗明星之一的地位。1980年主演《致命秘密》后，她离开香港，在台湾继续她的拍戏生涯。她在 80 年代初从聚光灯下退休。