Chengyu usage loop
一目了然
clear at a glance. Learn the modern situation first; the old story is useful only after the idiom has a job.
clear at a glance
Situation first
clear at a glanceA chengyu is a compressed judgment about a situation. Random idiom sprinkling is how learners sound like a proverb calendar.
Reading supports
Use these after the first listen. Pinyin is scaffolding; English is context; neither should become a sofa.
Literal meaning
clear at a glance
Story
This page focuses on the modern use of 一目了然, not just the old story.
Modern usage
Use 一目了然 in work contexts when the situation matches the meaning: clear at a glance.