Shenzhen's start up scene: from ski sensors to worm farms
The southern Chinese city of Shenzhen is famous for making electronics, but it's also become a popular spot for start-ups from all over the world.
Hax is a venture capital firm hoping to spot the entrepreneurs with the most promising ideas and then help them turn those ideas into products.
Projects being funded range from developing ski sensors to worm farms. The BBC went to take a look.
Produced by Jennifer Pak.