China’s Xu Mengtao finally picked up an Olympic gold at her home Beijing Winter Games on Monday when she leapt to victory in the women’s freestyle skiing aerials. The 31-year-old, who picked up silver in Sochi 2014 and in the Beijing mixed team event, went one better after leaving her very best jump to last. She managed a score of 108.61 following a back full-full-full with Belarusian 2018 champion Hanna Huskova taking silver and Megan Nick of the US bronze. “It is like a childhood dream for me,” said Xu, nicknamed Taotao, who punched the air as she entered the press conference having earlier …