zuān​niú​jiǎo​jiān

persist futilely

钻牛角尖 (鑽牛角尖) zuān​niú​jiǎo​jiān
persist futilely expression
to stubbornly focus on an insoluble problem or get caught in a dead-end way of thinking
split hairs noun
to waste time on insignificant or trivial details or minor points

Frequency

Movie subtitles
0.720 per million appears in 0% of films
Written text
0.858 per million

Sources

Definitions
CC-CEDICT