It was 5 p.m. on an ordinary Tuesday, and Li Ping was finishing up the company accounts before going to have a facial. She was working for her brother, Li Qiang, who owned one of the biggest private transport companies in Chongqing, a major city in southwestern China.
Suddenly, five plainclothes policemen barged into the room. They asked her name, then put a black hood over her head and drove her to a secret interrogation site. Her ordeal had begun.