The full version of Kill Po Lang was 228 minutes long. As for the reason why the mainland version of the movie, Killer Wolf, was deleted, I'm not sure about the details, but it was reported that the movie was affected by some cuts and adjustments when it was released in mainland China. Some scenes and dialogue were deleted, and some plots were simplified or changed. These changes could be due to censors and political reasons, or they could be due to negotiations and decisions between the producers and cinemas.