名从主人

míng cóng zhǔ rénmingcongzhuren

1. (idiom) to refer to sth by the name its owners use
2. to refer to a place by the name its inhabitants use (e.g. refer to Seoul as 首爾|首尔[Shou3 er3] rather than 漢城|汉城[Han4 cheng2])

Study it in Yanamino