Leave aside the green mummery at the end. A fascinating little discussion of the Chinese wheelbarrow.
And pondering the difference between the European and the Chinese wheelbarrows. I agree absolutely that the Chinese style one would have been useful in Europe. But I have a feeling that the design differences are due to their being made to perform different tasks (of course, with the possibility that their design differences meant that they were used for different tasks). I especially like the idea of the ones with sails. I could imagine making a modern version of those. Something like a windsurfing mast (although much smaller) attached to a modern lightweight construction borrowing from modern baby buggies/unicycles perhaps.
The European wheelbarrow is very good indeed at what it does: ease of loading and unloading of entirely unpacked goods. It’s very easy indeed (as compared to any other method at least, which is why we still use them) to shovel in sand, dirt, carry a few bricks whatever. And to dump them 50 or 100 yards away.
That’s not what the Chinese wheelbarrow is good for nor what it is or was used for at all.
But I am, as above, entirely unsure which came first: the design flowing from different desired uses or the different designs stumbled upon leading to different uses.