Why you need a dashcam in China

I am in china right now, taxi to and from work, couldn't pay me to drive. what an adventure. Most wouldn't believe the traffic movements where either side of the road is your side, left turns to cross traffic, people on scooters outnumber cars. 3 and sometimes 4 on a scooter at a time. No helmets and the riders can be children. The only right of way laws observed is "he who has the most balls". (and the loudest horns, which are constant).
I try to take videos from my phone in rush hour on the way home but get too nervous not watching the road and looking at my phone.