钻牛角尖

zuānniújiǎojiān

钻牛角尖 — zuānniújiǎojiān

1. lit. to get into a bull's horn; fig. to waste time on an insoluble or insignificant problem; to split hairs; to beat one's head against a brick wall

   别再钻牛角尖了，这件事根本解决不了。 bié zài zuānniújiǎojiān le zhèjiàn shì gēnběn jiějuébùliǎo — Stop splitting hairs — this matter can't be resolved at all.