2. Quick acupoint selection method: supine position, first take the midpoint of the connecting line between the two nipples and measure down 1.6 inch. In supine position, a depression can be touched at the junction of sternum and chest sword on the anterior median line, which is level with the fifth intercostal space. Supine position, the front median line, the midpoint of the junction of chest and sword, flat on the fifth intercostal space.