10,000-sq-m farm built on rooftop

This 10,000-square-meter farm in Southwest China's Chongqing may look ordinary at first glance, with its yellow rapeseed, crops, greenery and a pond.

But this is no ordinary farm - it sits atop a factory that manufactures doors.

The farm is big enough that a tractor is needed to help with farming. The factory's employees grow crops there, as well as raise poultry and livestock. There are even a few peacocks roaming around the farm.