十年硬汉无人知 一朝老婆天下闻

Meaning

"凯笛拉克" (Kaidilake/Cadillac) is the CP name for Wang Kai and Yu Di from 2018's "Super-Vocal." Named after Cadillac. Had little interaction during the show, but after it ended, the actual members joined the CP super-topic and posted! Still interact and promote each other's work