Rubuta ci gaba don wannan sakin layi - 2009 ta gama ta nauyi dagawa grand slam da shan zinariya a kasar Sin National Games
tare da sakamakon 125 kg a cikin snatch, 150 kg a cikin tsabta da kuma jerk ƙara zuwa 275 kg total. A gasar zakarun duniya ta 2009 ba ta iya ci gaba da rinjaye ta a kan nauyin kilo 75 kamar yadda Svetlana Podobedova na Kazakhstan ta shafe lambobin zinare uku, Cao ya bi ta don ɗaukar azurfa a cikin dukkanin fannoni uku. Daga baya a waccan shekarar ta wakilci kasarta a Wasannin Asiya ta Gabas inda ta dauki zinare tare da wasan kwaikwayon yau da kullun na 252 kg.