name of the movie

there is a movie, spoken in thai and chinese, where a group of young people face some supernatural forces, like spirits. It's supposed to be a terror movie, but there are some comedy elements.
i don't remember much, but there are 2 unmistakeable moments in the movie:

1) some spirits are getting closer to the group, and each one of them must keep hitting a saucer (or mug) with a spoon, so the noise makes them invisible to the spirits. At a certain moment, the mug of one of them breaks, and a spirit starts to see him (or her).

2) at a certain point of the movie, they enter the world of the spirits. The spirits start to gather around them. The boy, in fear, farts. His fart makes the spirits go away. So he keeps farting to make his way through.

Does anyone know this movie?
thanks