And in fact, if you look in Chinese, the word "bú kè qì" in Chinese, "You're welcome," means, "Don't be formal; we're family. We don't need to go through those formalities."
Po chińsku "bù​kè​qi", odpowiednik "nie ma za co", oznacza dosłownie: "Daruj sobie etykietę, jesteśmy rodziną.