what floor?

how many times? / numerous times, many times

Kyūjitai form of 注音符号: Zhuyin fuhao

Kyūjitai form of シュレーフリの記号: Schläfli symbol

the darkest place is under the candlestick; can't see the wood for the trees; people often known little of what happens under their noses; lit. "dark under a candlestick"

(mahjong) a 役満 (yakuman, “limit”) hand consisting of four concealed triplets

(literary, attributive) a state of pure naturality, free from artifice