US DOD reportedly learned quite a bit about jet engine lubrication from a "stolen" MiG-25.

https://en.m.wikipedia.org/wiki/Viktor_Belenko

The US definitely stole its share of British industrial secrets during the Industrial Revolution and German technology post-WW2, back when the US was behind. The US doesn't need to steal Chinese secrets, we're already ahead.

You should look up the Snowden leaks, and the NSA's activity in the corporate espionage world.

You realize the Snowden leaks only she’d light on our misbehavior and shows little of the shenanigans other powers engage in. You’re getting a very myopic view from Snowden’s leaks.

I think you misunderstood what I said. The comment I replied to expressed the myopic view that stealing trade secrets and corporate espionage is a one-way street.

I'm fully aware that pretty much every nation uses it's capabilities to get an advantage, through any feasible means - that includes corporate espionage. I highlighted the Snowden leaks because they exposed the NSA's activity in that space, in response to a comment that painted the picture of "only the Chinese do this" and "it's a one-way street".