Guo experienced series of losses in international games which led to her disappearance from the public eye for almost half a year. It is officially claimed "To help her mentally adjust". At the 2006 Asian Games in Doha, Guo returned to competition and took first place in Women's Singles, Women's Doubles and Women's Team. In 2007 from January to July, Guo attended six International Opens and won four gold medals. At the selection match for 2007 World Table Tennis Championships in Zagreb, Guo qualified early on.