Feeling Sheepish at Mutianyu

We were driving down the main road out of Mutianyu, feeling almost smug that we'd beaten the crowds when suddenly the traffic stopped.

Our driver snaked his way past two or three buses. What do we see but a farmer and small boy herding a flock of sheep and lambs, presumably from one grazing area to another?

It takes five minutes but they're eventually off to the side and we're zooming down the road again at full speed.