I added the title as 無間道III: 終極無間

The difference is the colon sign. (EDIT: I just read that the different colon sign is the one used in Chinese, Japanese and Korean computing, so if you object strongly I may have to reconsider. I wonder how it has been entered for other titles.)

@lineker said:

I added the title as 無間道III: 終極無間

The difference is the colon sign. (EDIT: I just read that the different colon sign is the one used in Chinese, Japanese and Korean computing, so if you object strongly I may have to reconsider. I wonder how it has been entered for other titles.)

無間道 is a Chinese movie,you should use Chinese characters（漢字）+full width colon（全角冒号）="無間道III：終極無間". OR Here is the official site of the production company, it displays just "無間道 III". https://www.mediaasia.com/Zh-hant/Movies/Info/83/