突擊檢查 tū jī jiǎn chá

DEFINITIONS

  1. sudden unannounced investigation
  2. on-the-spot inspection
  3. to search without notification

CHARACTERS

突 tū suddenly, abruptly, unexpectedly
擊 jī strike, hit, beat; attack, fight
檢 jiǎn check; examine
查 chá investigate, examine, seek into