About 40 years ago I saw on TV a dubbed in English, Asian movie. A witch in the employ of a warlord, warns of a young traveler and a meddler;an old  sorcerer who can turn himself into a fly.  The sorcerer has a curse, when he sees a pretty lady, he finds himself unable to move without serious concentration.  The young traveler knows how to  fight. He befriends the sorcerer.

One of the major scenes is when the witch goes after the sorcerer.  He becomes a fly and she becomes a small spiked orb.  She sees a fly go inside a bottle and she (as an orb) becomes smaller to go in after the fly. The sorcerer puts a cork on the bottle she is trapped for the rest of the movie. (She chased the wrong fly into the bottle.)