xiǎo​cōng​ming

trivial cleverness

小聪明 (小聰明) xiǎo​cōng​ming
trivial cleverness adjective
cleverness in unimportant matters or being sharp but petty-minded

Don't try to be clever about these trivial matters; it's better to be down-to-earth.

Frequency

Movie subtitles
2.15 per million appears in 1% of films
Written text
1.21 per million

Sources

Definitions
CC-CEDICT