How do you make money while doing the things you love? 30-year-old Wang Gang of Xi'an, China spent a lot of money on online gaming, but soon found a way to turn his hobby into a cash cow.

He started gold-farming, which is a practice of hiring another gamer to play on your behalf to produce in-game currency or accumulate characters, items that are valuable, while you sleep!

But he decided that he could be doing that too, so he started his own gold-farming company.

Wang was able to put bread on the table through gaming skills. He has 19 computers and enables hired gamers to log on to three accounts at once and "works" from 9am to 12am non-stop.

Not your everyday conventional business, though.