Chinese figure skater Zhu Yi has faced vitriol online after she fell during her debut performance at the Beijing Winter Olympics. The 19-year-old, who was born in California, gave up her American citizenship to compete for China. The teen left the skating rink at Capital Indoor Stadium in tears Monday after she fell twice during the free skate event, part of women's team competition. China finished fifth in the event. Her latest performance comes a day after Zhu failed to complete her opening combination in the women's short program, stumbled and crashed into a wall . She finished last, dropping…