Every town and city in Vietnam has at least one metal street, where you can buy engine parts, rivets, girders and other metal things I don’t know the names of. Can Tho’s metal street is actually two fairly short, very narrow intersecting alleyways, a stone’s throw and a million miles from the scenic waterfront. Sparks fly. Buzzing and clanging sounds fill the air. Tiny, cramped booths offer all manner of hardware for sale, and men – it’s nearly all men – saw, weld and solder in open-fronted workshops.