The opening credits don't list Jaycee Chan as the director, neither do they list them with his cameo appearance (also applies to Eric Tsang's cameo). This happened during the re-editing process because of Jaycee Chan's Cannabis scandal and imprisonment years before as well as his - for Chinese politics - too liberal shot scenes for the film.
The opening credits are written in Chinese and English. The English credits for "executive producers" are misspelled twice as "excetutive producer". Some names written in English also have double-capitalized letters one after another.