What's the song about how you get old just when you get it?

"It's getting old in a flash". "How to get old just when you know things" is from the song "A Shake is Old". The lyrics are: "Time has gone so quickly, how just learning to understand things is old." "A wobble will be old" singer uncle autumn pants, lyrics Gao Yu, composer Chen Wei, released on July 20, 2017, included in the album "a wobble will be old".