Report: millions of Uber’s China rides are faked

How do the driver and rider that are in cahoots ensure that they are paired together for the ride?

How much more money does one make using this method vs regular uber driving?

Why do accounts need to be bought and sold? is it a small minority that are doing this in bulk on one account at a time until it gets banned?

I have a lot of remaining questions that I feel like this article did not adequately explain... (or maybe it did and my comprehension is just low)