Multifarious Misunderstandings

"It's all Greek to me!" This is what Americans usually say when someone is saying something that is incomprehensible or just way over your head. Actually, in Swedish you'd say the same thing, "Det är rena grekiskan!", when you don't understand something. The Spaniards also don't understand Greek nor do they know Chinese (Eso es griego para mí /Esto me sueña a chino, no me hables en chino). Perhaps, however, the "Greek" thing will change in the future to Chinese in English as well because I just watched an episode of "How I Met Your Mother" and in it, Marshall says to Lily, "It's like your speaking Chinese to me." Then I wondered if there's an expression in Greek or Chinese similar to the expression "It's all Greek to me!" in English, Swedish, Spanish, etc. Greeks, according to my research, don't understand Chinese or Arabic, and Arabic speakers don't understand Hindi.

Overall, though, my conclusion is that most people don't understand Chinese: