yī​bǎ​yào​shi​kāi​yī​bǎ​suǒ

one key opens one lock

一把钥匙开一把锁 一把鑰匙開一把鎖 yī​bǎ​yào​shi​kāi​yī​bǎ​suǒ
one key opens one lock
(idiom) there is a different solution for each problem; specific problems should be solved with specific methods based on the circumstances

Frequency

Written text
0.054 per million

Sources

Frequency data
BCC Corpus (BLCU)