ㄑㄧㄢㄌㄩˋˋㄉㄜˊqiānlǜ‑yìdé

千虑一得
qiānlǜ‑yīdéㄑㄧㄢ ㄌㄩˋ ㄧ ㄉㄜˊ
  1. 即使愚笨經過考慮總會一些可取地方自謙自己想法 千慮一得參考」。

a thousand tries leads to one success (idiom, humble expr.)​; Even without any notable ability on my part, I may still get it right sometimes by good luck.
(expr. idiom.)​ mille tentatives conduisent au succès