Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Chinese Activist Who Called on Xi to Resign Detained on State Security Charges Verna Yu HONG KONG - Prominent Chinese activist and legal academic Xu Zhiyong, who has urged President Xi Jinping to step down over the coronavirus epidemic and other crises, has been held by authorities in secret detention on a state security charge that carries a maximum sentence of 15 years in jail, his friends said Sunday. Xu, a former law professor and champion of social equality and the rule of law, was detained Feb. 15. His family found out from Beijing police Saturday, after repeated inquiries, that he has been held on the charge of "inciting subversion of state power," said fellow activist Hu Jia and legal academic Teng Biao. References Visible links Hidden links: 1. file://localhost/science-health/coronavirus-outbreak/chinese-activist-detained-after-calling-xi-resign .