nán xiōng nán dì
hard to differentiate between elder and younger brother; one is just as bad as the other
brothers in hardship; fellow sufferers
難兄難弟 東漢陳元方子長文即陳群也，與季方子孝光各論其父功德，爭之不決，咨於太丘。太丘即陳寔，元方、季方父也。太丘曰：“元方難為兄，季方難為弟。”又晉王珉，字秀傑。少有才藝，名同於兄王詢之，《右語》曰：“法護非不嘉，僧彌難為兄。”法護詢小，字僧彌。泯小，字也。