What does it mean to be lonely and miss too much?

The master recalled the story of Lin Chaoying. "Flowers bloom infinitely, loneliness and yearning are too vast" is from the TV series "The Condor Heroes", and the song is called "You and Me". Flowers bloom and fall can represent the passage of time. Missing is vast because it can exist in any form and in any way. The meaning of this lyric is that the host is remembering the story of Lin Chaoying and missing the vast sea.