相ㄒㄧㄤ見ㄐㄧㄢˋ恨ㄏㄣˋ晚ㄨㄢˇxiāngjiàn‑hènwǎn

简相见恨晚

  1. 為相見太晚而遺憾。形容一見如故，脾氣投合。例 「我們看法完全一致，真是相見恨晚啊」。

英to regret not having met earlier (idiom)​; It is nice to meet you finally., It feels like we have known each other all along.