If you want to watch a proper parody of Journey to the West, I suggest to watch the original version: A Chinese Odyssey (1995) part1&2 and the "prequel" of this movie that it's still greatly better with so many Easters from the classic adaptations. This time, Stephen Chow just wrote the script and didn´t direct it so maybe that's why...

I don't even need to justify why I didn´t like it, I simply watched better ones before and then I encountered this. I tried to enjoy it as a mere entertainment, but I couldn´t. The main character that is the monk, doesn´t convince me as a monk, the Monkey King is just plainly angry all the time, the pig has also another complex and the fish... I wouldn´t know how to describe it. In general, they don´t possess a very deep character development, even as a mere way of attempting to entertain, it was difficult to swallow.