And it does so on seas that aren't even remotely close to China. They're looting the entire Pacific Ocean.
They export tens of billions of dollars in seafood every year, why does it matter where they're fishing if they're selling it worldwide?
Who makes the profit? Duh.
You might be right, but it's certainly not a "duh". Consumer surplus exists in addition to producer surplus.
Externalities also exist-- funny how the dead seafloor and collapsing local fisheries don’t show up in the export statistics.