国安 Traditional form: 國安 Pinyin (reading): guó'ān Definitions: national security (abbr. for 國家安全/国家安全 (guójiā'ānquán)) national security act state security agency Characters: 国 - country, nation, state; national 安 - peaceful, tranquil, quiet Traditional characters: 國 - country, nation, state; national 安 - peaceful, tranquil, quiet