XueFu Lu is being ripped to pieces at the moment - trees uprooted, bus stops moved, concrete being laid, etc I heard a rumour it was being turned back into a two-way road, possibly because of the underground being built there. Does anybody know for sure?

Not sure, but in our neck of the woods, they are ripping out the trees that did not survive, and filling the holes with concrete. Perhaps to provide more sidewalk/parking.

Pretty sure it's more than that. Rows of shops have been vacated and boarded up. Bus stops relocated. Must be road-widening for some reason...

Five years on, there seems to be light at the end of the tunnel. Parts of the road is being resurfaced, some of the underground stations are up and running, trees are being replanted...