I was working now on PC which read chinese characters (the one I have at home doesn't) and wanted to identify mainland releses of Chin Ka Lok's movies, and was very surprised when I found out that he is credited on the most websites not as 錢嘉樂 (Chin Ka Lok - his real name), nor 錢家樂 (Chin Kar Lok),
but as 钱嘉乐
Is it written here "Chin Ka Lok" by simplified characters, or it is chinese aliase?

錢嘉樂 is traditional.
钱嘉乐 is simplified. First and last character changed!

You can look that up HERE.