亲兄弟，明算帐 (親兄弟，明算帳) qīn xiōngdì, míng suàn zhàng

qīn xiōngdì, míng suàn zhàng phrase even with your own brother, keep clear accounts
Domain: Proverb 谚语
Notes: (CC-CEDICT '親兄弟，明算帳')