十全十美
Meaning
Perfect in every respect; flawless.
In a sentence
No plan is 十全十美 — we just have to start.
Usage note
Frequently negated: 没有十全十美的事 ("nothing is perfect").
Where you see it in Brain Challenge
This idiom appears in the picture-idiom levels as a picture or number clue. When the clue shows numbers, the digits usually become the first characters of each half of the idiom — that is why so many chengyu start with 一, 三, 五, 七, 九 or 十.