Josephine Siao Fong-Fong was born as Siao Liang in Luzhi in Suzhou, Jiangsu. At the age of two, she was brought to Hong Kong by her parents.

Siao's first movie appearance was at age six, and she became one of the biggest teen idols in Hong Kong during the late 1960s, along with frequent co-star Connie Chan Po-chu. The two were often cast in wuxia films as disciples of the same master and sometimes—when Connie played the male lead—as young heroes in love. Back in the 1960s, Josephine's and Connie's fans maintained a heated rivalry. News of their fans getting into catfights was not uncommon in those days.

Unlike many child stars, Siao made a successful transition to adult stardom, remaining one of Hong Kong's most prolific and popular actresses. She was also one of the directors (co-directing with Leung Po-Chih 梁普智) and writers of Jumping Ash (跳灰). This film is regarded as a prelude to the Hong Kong New Wave in the 1980s by film critics.

Having largely missed out on formal education because of her acting career as a child, Siao pursued her studies in later years despite the handicap of increasing deafness and the demands of raising a family (she has two daughters by her second husband). During this time she made fewer films, but her output included highly praised work such as her award-winning performance in Summer Snow (1995) as a middle-aged housewife trying to cope with a father suffering from Alzheimer's Disease.

Western fans of martial arts films will probably know her best from the Fong Sai-yuk films made in 1993, in which she played Jet Li's kung fu–fighting mother. (These films were released on Western DVD as The Legend.)

Siao has retired from show business since 1997 in favour of her work in child psychology. In particular, she is a noted campaigner against child abuse, and founded the End Child Sexual Abuse Foundation, which she now chairs, in 1999. She is also a published author. Edit Biography