AP Photo

The Wenzhou crash killed forty people and injured a hundred and ninety-two. For reasons both practical and symbolic, the government was desperate to get trains running again, and within twenty-four hours it declared the line back in business. The Department of Propaganda ordered editors to give the crash as little attention as possible. “Do not question, do not elaborate,” it warned, on an internal notice. When newspapers came out the next morning, China’s first high-speed train wreck was not on the front page. But, instead of moving on, the public wanted to know what had happened, and why. This was not a bus plunging off a road in a provincial outpost; it was dozens of men and women dying on one of the nation’s proudest achievements—in a newly wired age,...