Corrected entry: When Roy plunges into the water, when the bad-guy cuts the line, you can see he hits the line with his sword, which sparks but doesn't damage the line at all. The line simply begins to move rapidly as if cut.
Corrected entry: In the scene where Chon is fighting in the library, he holds up numerous books as shields. The man's sword does not pierce the covers of the last two books, in fact it bends slightly. But Chon discards the books and grabs a new one each time.
Corrected entry: Chon Wang and Rathbone's swords simply vanish before they fall out of the clocktower.
Corrected entry: Roy O'Bannon mentions his investment choice of being between cars or zeppelins. At least cars were only a couple of years away and were in the process of being invented. The zeppelin did not make its first flight for another thirteen years, on 2 July 1900, and was the brainchild of a German count - hardly the sort of person to go begging in America for support of his invention.
Corrected entry: In the scene in the library when Chon and Roy are searching for a secret panel, when Chon trips the lever and starts the fireplace spinning, you see it happening with Roy in the foreground reading the Karma Sutra. If you look above Roy's right shoulder as the fireplace is spinning, when the fireplace is perpendicular to its normal position, you can see someone in the next room helping to spin the fireplace. This person cannot be the guards that Chon and Roy fight soon after, as you would have been able to see that person in a following shot when you see Chon inside the secret room and you can see the entire wall behind him. Also, the person appears to be wearing a hat.
Corrected entry: Big Ben does not immediately strike the hour, as portrayed in the movie. It actually plays a little tune first.
Corrected entry: In the library fight (deleted scenes archive, DVD version), a kick blows out four candles. In the next shot, all candles are burning again.
Corrected entry: There are too many cars on the roads. The internal combustion engine was not to be invented for another two years, and hardly anybody drove the steam-powered ones invented in the 1870s.
Corrected entry: Chon, Lin and Roy stay at a fairly decent hotel when they are in Whitechapel. Hotels as nice and clean as that did not exist in Whitechapel in 1887.
Corrected entry: When Jackie And Owen fall from the clocktower, holding the flag, they fall into the Queens' caravan. They land on the seat opposite the Queen without going through to the ground. Even though they grabbed onto the flag, it wouldn't have made a difference
Corrected entry: After the scene with the pillow fight, the girl storms out. When she runs out of the hotel, she has black and white sneakers on which is odd for that time in history.
Corrected entry: On the deleted scene when Roy and Chon are in armours, if you play it in slow motion, you can see that the guards stop BEFORE Roy sneezes.
Corrected entry: In 1887, when the movie takes place, a machine gun was not called a machine gun.It was referred to as a Gattling gun.The term machine gun didn't come into use until the mid 1920's.
Corrected entry: In the scene on the barge where Jackie Chan and Donnie Yen are fighting it out, Fenn Wong finishes off Donnie Yen by firing a large firework at him which carries him over the river before exploding. According to one of Newton's Laws 'for every action there is an EQUAL and opposite reaction.' Therefore for the firework to have enough force to push Donnie Yen up into the air, it would have had to also push Fenn Wong back with the same force, and considering she is wearing slippered shoes and standing on a flat surface, she would have been pushed off the other side of the barge.