(Generous) 9 - Together with the superlative "Police Story" (a completely different film aiming for a very distinct feeling), this is Chan's supreme achievement, containing his best choreographies and resting completely on his likability and corporeal fluidity. Not two neighboring moments in this are anything if not a delight to watch.
In his review of Jackie Chan's performance in LoDM, Roger Ebert reminds us that “Computerized special effects have made the authenticity of his physical skills sort of obsolete. When you see bodies whirling in air in The Matrix you don't think about [CGI], you simply accept them [as real]. But what Chan does, he is more or less actually doing [like] Buster Keaton, Douglas Fairbanks, Sr., Fred Astaire, Gene Kelly.”