Description:China's Xu Mengtao got the defence of her freestyle skiing aerials World Cup title off to the ideal start when she won the opening event of the season in Changchun on Saturday (January 5). The 22-year-old won five events last year on the way to the aerials championship and picked up her first this season, producing the best score of every round before recording 109.06 in the second final to beat Olympic champion Lydia Lassila of Australia by more than 10 points.(1:14)