Although action packed the film was actually low budget.
The American version of this film called Supercop 2 renamed Yang too Jessica.
Bill Tung returns as Uncle Bill.
Cameos (jewerly store scene) Eric Chang (in drag), Mars and Jackie Chan (in drag)
Yukari Oshima cameos at the begining in the hostage scene. She is the red dressed fighter.
In the UK MIA released this film as Project S: Once a Cop in the late 90s. The box claims that Yangs boyfriend played by Yu Rong Guang is played by Micheal (In the Line of Duty 4: The Witness) Wong.
Jackie Chan produced the film so lent himself too the shoot for 2 days unpaid.
Stanley Tong seems too be one of the few directors Jackie likes. As well as this he as also directed PS3, PS4 and Rumble in the Bronx.
There are no outtakes at the end of this film.
Michelle Yeoh starts off this film in the same uniform she wore at the begining of PS3.
It would seem that Uncle Bill as a niece strangely called May.
Jackie is often billed as main star but he is only in this film for around 2 minuites. It would seem though that he is still Ka Kui.
Bill Tungs charector is a lot more serious here.
I understand the US version of this film. Called Supercop 2 as had scenes removed but I have not seen this version yet.