created sense approved 怎么回事儿/怎麼回事兒 · zěnmehuíshì'er · what happened
怎么回事儿 / 怎麼回事兒
zěnmehuíshì'er
what happened
an idiom used to ask about the reason or nature of a situation, event, or incident, equivalent to 'what is going on' or 'what is the matter'.
这是怎么回事儿?
pronoun