Using improper or “low”
手段 can cause someone to lose
面子 (miànzi), or “face,” which is their social standing and reputation. Even if you succeed, succeeding in a dishonorable way reflects poorly on your character. This is why accusing someone of “using
手段” (用手段 - yòng shǒuduàn) is a serious criticism of their moral character, not just their strategy.