"Sanghi Vinaya" says: "One moment is one thought, twenty thoughts are one moment, twenty moments are one flick of the finger, twenty flicks of the finger are one Luotu, twenty Luotu are one moment, and there are thirty moments in a day and a night."
A snap of the fingers contains four hundred moments, and four hundred snaps of the fingers can become a moment. Therefore, when we talk about a snap of fingers, it is not long or short.
People pass each other by each other, and two people's life and death commitments are just a matter of a snap of a finger.