This point is an auricular acupuncture point and not a true Master Tung point, but I use it with Master Tung points often enough that I needed to include it.
This point is bled rather than needled. Massage the ear, squeezing with medium pressure from the Darwin's tubercle up to the tip and from the place where the helix meets the head up to the tip.
Massage until the area turns pink, then pinch and prick. Squeeze blood out. How much depends on the reason you are doing this!