Facial palsy with drooping mouth and eye, excessive salivation, eyelid twitching, toothache, cheek swelling, facial nerve paralysis, trigeminal neuralgia, etc.

On the face, directly lateral to the corner of the mouth, directly above the pupil. (This acupoint is bilateral, one on each side.)

Sit upright with a level gaze, where the vertical line directly below the pupil intersects with the horizontal line at the corner of the mouth.