Correct
南箕北斗
/ nán jī běidǒu /
Strokes
Definition
the Winnowing Basket in the southern sky, and the Big Dipper in the north (idiom); sth which, despite its name, is of no practical use
Example
Definition
Winnowing-fan in the southern skies and Dipper in the northern skies—something which is well-known but useless