Richard Kuipers Hong Kong’s Oscar submission is an entertaining feel-good biography of So Wa-wai, the national sporting hero who won 12 medals in five Paralympic Games from 1996 to 2012. Focused on the powerful bond between the disabled runner and his fiercely dedicated mother, “Hero” injects just enough gritty drama about the champion’s financial and emotional battles to prevent the story being overwhelmed by sugary sentiment applied liberally elsewhere.