|Kanji in this term|
Such use of 無用 is not very common. In addition, the surface meaning is that one "must not heaven and earth". As such, this phrase is sometimes misinterpreted as "heaven and earth do not matter", using the more readily comprehensible interpretation of 無用 as meaning "useless" but leading to the exact opposite intended meaning ("it is okay to flip this package").
- 割れ物注意 (waremono chūi, “fragile”)