I don't know why that surprises anyone. China has been stealing Intellectual Property from us for decades. China literally has 4 times as many brains as the U.S., everyone claims that Asians are smarter, yet China can't even invent nor engineer their own things.
Remarkably ignorant of you.
We know it. We know that they know we know it. Yet it goes on. But what no really talks about is that in many instances, they don't need to steal it. We have Chinese grad students, doing research projects, taking internships, etc.
Notice that we don't get many Chinese students in the liberal arts. They are typical engineering and hard science students.