0.1–0.2 cun vertically or obliquely in a proximal direction or prick to bleed with a needle, lancet or three-edged needle.
Furthermore, Yinbai SP-1 calms the Heart and the Mind. It also restores consciousness. This is often caused by Blood Stagnation with typical symptoms such as agitations, sighing, sadness, manic depression, excessive dreaming and insomnia.
Actually for all the Channels that originates at the fingertip or toes, this principle applies. Their first point (Well-Jing) receive Qi and impact from the related Channels which terminate at the finger or toes.
For example, for all the Channels of the Hand (Yang starts while Yin ends):
For all the Channels of the Foot (Yin starts while Yang ends):