> In this case, China shouldn't have had any trouble getting Hong Kong authorities to arrest and extradite this person, so it doesn't seem like the same thing.
Given the current political situation in Hong Kong, this may not be a valid assumption.
I'd be curious about Oil and Gas. I'm familiar with the other fields, but that one seems to require even less training for around the same amount of money. Or if you get into petroleum engineering - I remember in college that was known as the profession with the highest salary straight out of school.