thorough preparation

Basic Information Chinese Idiom: 万无一失Pinyin: wàn wú yī shīLiteral Meaning: Out of ten‑thousand attempts, not a single failure occurs. Figurative definition To have absolute certainty; no possibility of mistakes or mishaps. It describes a plan or action so well‑prepared that failure is virtually impossible.English equivalents: no chance of going wrong, foolproof, absolutely safe, a…