Charactor vs. Charactor help

Yo, I m hav’n problems fighting yuns with chun-li.Most of the match im trying to anticipate jump-ins, via to trade or early to catch him mid air.Is there any fool proof or close to, way to beat dives, I mean it;s almost impossible to react to every time.Once he activates I usually try to c.lp hiim back outa throw range.Also is there an easier way to do b.fpxxlightning legs, i get it 1 outa 10.So can someone shine some light on the match up, I play her mostly rushdown so hardcore turtle advice is out the door.