The original meaning of "suddenly" was that my heart was blocked by thatch, and now it suddenly opened (suddenly: blocked by thatch. Suddenly, immediately); After metaphor suddenly understand, understand. This idiom is often used as predicate, adverbial and attribute in sentences. With praise. Mostly used in written language. Also known as "suddenly open".
Idiom implication
If the path in the mountain doesn't walk for a while, it will be blocked by overgrown thatch and miscellaneous trees, which is a very accurate metaphor for people's thinking being blocked. "The body is a bodhi tree, and the heart is like a mirror. Wipe it from time to time to avoid dust. " It is to study and practice regularly to avoid being blinded and blocked by messy distractions. People should always read and think, just to keep their hearts clean and not be confused by the world. People need to have firm beliefs and clear life values, which requires frequent reading and thinking.