Zhang Dayi,aged 30,has amassed quite a fortune using primarily her phone.Her apparel store on Taobao,China's largest online marketplace,moved 600,000 pieces on a single day-November 11.In the last shopping spree,the massive sales bump pushed her sales revenues up to 170 million yuan(US$24.4 million).Her business was hardly planned.Formerly a print fashion model,she became widely known for sharing how she mixed and matched outfits through posts on Sina Weibo,the Chinese equivalent of Twitter.Many of her posts went viral.By 2014,she had amassed some 300,000 followers on the social media platform.