ㄉㄥdēngㄊㄤˊtángㄖㄨˋˋshì

  1. 比喻學問技藝循序漸進達到高深境界參見升堂入室·》:昆弟歐陽元老黃門登堂入室自足名家。」

  2. 許可自行進入他人內室竟然擅自登堂入室簡直目中無人。」

from the main room, enter the inner chamber (idiom)​, to go to the next level, to attain a higher level