Just for a second at the beginning, a phrase appears in Chinese. I sent it to my friend Jihong, hoping that it would say where and when this happened. It doesn't. She translated it as "Non material cultural heritage treasure."
How cool! Preservation (by video) of a methodology.
The wheelbarrow tips. I can't see how it's hinged, but he tips the frame, the tray/bucket tips all the way over and dumps cement, then when he sets the frame down, the bucket falls back down.
If you have facebook, here's where it is: https://www.facebook.com/Iseekplantcomau/videos/1507127392719681/