Qu-chi ( LI @ ) , Hegu ( LI @ ) , Dazhui ( GV @ ) , Shaoshang ( LU @ ) and Erjian ( EX @ ) were selected in the acupuncture bloodletting group , intravenous injection of penicillin sodium was applied in the penicillin group and acupuncture bloodletting combined with penicillin was applied in the comprehensive group .