This is Part 1 of a BuzzFeed News investigation. For Part 2, click here. For Part 3, click here. For Part 4, click here. For Part 5, click here.This project was supported by the Open Technology Fund, the Pulitzer Center, and the Eyebeam Center for the Future of Journalism. China has secretly built scores of massive new prison and internment camps in the past three years, dramatically escalating it