歃血为盟[shà xuè wéi méng]
词典smear the blood as a sign of the oath -- an old Chinese practice：歃血为盟。
词典lick blood and swear：插血为盟；歃血为盟。
词典pledge each other in wine in which blood has been mixed：歃血为盟。
词典smear one's lips with its blood in token of one's oath：歃血为盟。
歃血为盟[shà xuè wéi méng]
smear the blood as a sign of the oath -- an old Chinese practice; lick blood and swear; pledge each other in wine in which blood has been mixed; smear one's lips with its blood in token of one's oath; smear the mouth with blood and swear fidelity