斗心眼儿

Traditional (Taiwan): 鬥心眼兒

dòuxīnyǎnr ㄉㄡˋ ㄒㄧㄣ ㄧㄢˇㄦ

    • to try secretly to outdo each other with schemes

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
compete in wits
Meaning
To secretly try to outdo each other with schemes and calculation. Mildly critical.

Sources