This photo taken on July 21, 2017 shows writer and former professor Qiao Mu posing for a photo at his home in Beijing. When outspoken professor Qiao Mu posted his resignation letter on a popular Chinese messaging app, sympathetic readers tapped their phone screens to send him money, leaving him with a 20,000 yuan (3,000 USD) payday. China's widely-used applications have given writers like Qiao an outlet to self-publish and make money -- as long as their words respect the boundaries set by online censors inside China's "Great Firewall". / AFP PHOTO / GREG BAKER (Photo credit should read GREG BAKER/AFP/Getty Images)
