She threw the shot beyond 17 metres for the first time in 2008 and won her first titles that same year, claiming the gold medals at the National Youth Championships and the Asian Junior Athletics Championships. Meng was chosen to represent her country at the 2008 World Junior Championships in Athletics and she ended that competition in fifth. The following year she won the Chinese junior and high school, then came sixth at the 2009 National Games of China with a personal best of 17.52 m.