One day in August 2021, Zhao Wei disappeared. For one of China’s best-known actresses to physically vanish from public view would have been enough to cause a stir on its own. But Zhao’s disappearing act was far more thorough: overnight, she was erased from the internet. Her Weibo social media page, with its 86 million followers, went offline, as did fan sites dedicated to her. Searches for her many films and television shows returned no results on streaming sites. Zhao’s name was scrubb...