- 屡试不爽 lǚshìbùshuǎng time-testedproven effective through repeated testing; never failing
- 毫厘不爽 háolíbùshuǎng precisewithout the slightest error or discrepancy; to be extremely accurate
- 毫发不爽 háofàbùshuǎng accurateextremely accurate; not deviating by even a hair's breadth
- 报应不爽 bàoyìngbùshuǎng retributiondivine retribution is certain and unfailing; one is inevitably punished for one's misdeeds
