Daily Chinese Idiom Guessing Game
To take warning from something and use it as a lesson to avoid similar mistakes in the future.
引用；戒鉴戒。指把过去犯错误的教训拿来作为警戒，避免重犯。
《国语·楚语下》人之求多闻善败，以鉴戒也。”
After the project failed due to poor planning, the team took it as a warning for future endeavors.