use portal_event in echopy
use portal_event in echopy

hanw/connectal,hanw/connectal,chenm001/connectal,cambridgehackers/connectal,csail-csg/connectal,chenm001/connectal,chenm001/connectal,hanw/connectal,cambridgehackers/connectal,hanw/connectal,chenm001/connectal,csail-csg/connectal,cambridgehackers/connectal,cambridgehackers/connectal,hanw/connectal,chenm001/connectal,csail-csg/connectal,csail-csg/connectal,csail-csg/connectal,cambridgehackers/connectal