ˊˋwúshìㄅㄨˋㄉㄥdēngㄙㄢㄅㄠˇ殿ㄉㄧㄢˋsānbǎodiàn

无事不登三宝殿
  1. 沒事上門三寶殿殿)​。 從來無事不登三寶殿肯定什麼」。

lit. One doesn't visit a temple without a cause. (idiom)​, fig. to visit sb with an ulterior motive (esp. to ask for sth)​, having a hidden agenda