







烂如指掌 is a Chinese idiom (chengyu) meaning “to know something inside out”. To have a thorough grasp of a situation; to know something like the back of one's hand. Literally, “extremely clear as one's palm”.

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Open the tool →烂如指掌 (làn rú zhǐ zhǎng) is a Chinese idiom (chengyu) meaning “to know something inside out”.
烂如指掌 is pronounced làn rú zhǐ zhǎng in Mandarin Chinese.
Literally, 烂如指掌 means “extremely clear as one's palm”. It is used to mean “to know something inside out”.
犹言了如指掌。形容对情况了解得非常清楚。