There a few scenes of violence present in the film that do not dwell on any infliction of pain.

None. Only some insults like "idiot" or "stupid".

There's a scene where dealer locks baby monster in the cage and sticks electric shock sticker. Tian Yin looks behind but walks away. After watching that, baby monster cries (sometimes sounds louder). This scene is very unsettling and intense.

This film contains little to no frightening scenes, it is a fantasy story about the bond between a human, Tian-yin and a baby monster who comes into his possession by accident. Moreover, Tian-yin attempts to protect the creature from others who seek to capture him for their own gains. This may prove slightly distressing for younger viewers.