Literature Reference: The sound of raindrops invades a cold dream, and a faint melancholy lingers. Source from 'Night Rain'.
淡: Indifferent, aloof. Used in names to describe a person who is serene and detached, not easily swayed by external matters.
愁: Misery and a face clouded with sorrow.
Meaning: A subtle sorrow, as delicate and introspective as autumn rain.