以慎为键
yǐ​shèn​wéi​jiàn

to take caution as the key

  1. 以 yǐ preposition
    by means of
    to use; by means of; with; using the tool or method introduced
  2. 慎 shèn adjective
    cautious
    (bound form) careful; cautious; prudent; used as a root in words like 谨慎 jǐn​shèn or 慎重 shèn​zhòng
  3. 为 為 wéi verbpreposition
    to be
    to be; to become; to act as; to serve as; to take as
  4. 键 鍵 jiàn nounadjective
    key part
    (bound form) most important part of something; crucial point