YouTube auto generated captions get downright wacky sometimes. Either that or this 80's Turkish movie was thinking way ahead of it's time.

Ninja: Learn to hear the sound of footsteps, the sound of a punch tearing the air, the blow of a heel, the thin wind of a silent sword as it comes! 🙂 Additional info: After the 1980 coup, cinema, which already had a very limited budget, and the solid music of the 60s and 70s fell into a coma.