明察暗訪

Simplified: 明察暗访

míngchá'ànfǎng ㄇㄧㄥˊ ㄔㄚˊ ㄢˋ ㄈㄤˇ

    • open enquiries and secret search (idiom) to investigate openly and in secret
    • taking information from all sides

Character by character

Sources