The index finger and middle finger move slowly downward to the left and right sides of the vulva, with each fingertip placed firmly against the outer surface of the corresponding labial tissue. Maintaining continuous contact with the labia, the fingers slowly and gently pull outward laterally, then gradually release back to the resting position, repeating this slow back-and-forth traction several times without rubbing or sliding. The fingers do not obstruct the surrounding tissue. Finally, a small amount of white fluid flows out. The woman has an expression of enjoyment.