9 to 5 Mac has been covering the case since shortly after it began, and their report on Zhang’s sentencing has a good overview of the issues to date.
The basics? Zhang worked for Apple in the U.S., where he worked on the company’s self-driving car project, Project Titan. He then left abruptly to work for another company, this one based in China, XMotors. When he did so, he brought several proprietary documents with him. Hence the charges against him, to which he eventually pleaded guilty. The Department of Justice also announced several charges in the case last year. more