Dizziness, blurred vision, tinnitus.

On the head, directly above the midpoint of the anterior hairline by 5.5 cun, and 1.5 cun lateral to it. (This acupoint is bilateral, one on each side.)

Sit up straight. Take an elastic band marked with two equal parts, stretch the band so that its ends correspond to the starting points of the front and back hairline. Measure halfway from the midpoint towards the front hairline, then two horizontal fingers to the side, and press where there is a painful sensation, which is the location of this acupoint.