@@Nida-zg7kh He's Korean. It's just a joke because when he does variety shows and things he doesn't speak well, but when he does foreign concerts, his Mandarin, Japanese, English, and Spanish are all pretty darned good.
When donghae joked about retiring from singing.. if there wasn’t a hint of truth in that, Eunhyuk wouldn’t have reacted that way... I mean they’ve been idols for 14 years without stopping except for military duties and they must be tired. Donghae will probably just compose songs if he retires from idol life