The film also ran out as the numerical winner, collecting five awards on Sunday night from its 11 previous nominations. For Hui, it was her sixth time as winner of the best director prize.
Another notable winner was Louis Koo Tin-lok, who won the best actor award for action film Paradox. Widely popular, Koo picked up his first ever acting prize just a few weeks ago, for the same film, at the Asian Film Awards.
As yet, there have been no reports of TV coverage of the event being disrupted in mainland China. In past years, live transmission of the Hong Kong awards has been cut due to political sensitivities surrounding winning films Ten Years and Trivisa.
China's entertainment industry regulators are currently cracking down on a wide range of content and industry figures. Hui's film, which features resistance forces at the time of Japan's invasion of British colonial Hong Kong was last year announced as the opening film of the Shanghai International Film Festival, but shortly after, was replaced by Bille August's The Chinese Widow, which was deemed more politically suitable.