The phrase "about what remained" is correct and usable in written English.
It can be used when discussing the leftover or remaining aspects of a situation, topic, or object.
Example: "We had a long discussion about what remained of the project after the budget cuts."
Alternatives: "regarding what was left" or "concerning what stayed behind".
I was curious about what remained of the Erie Canal's antique-but-emphatic interruptions of the landscape, what still works and why I found it all so moving.
A few years after Professor Finlay arrived here, she recalled, she decided to do something about what remained of the Wilder Collection.
He had crossed out two-thirds of the early clips, and he had written notes about what remained: "Nice but later"; "Where's this coming from?" His anticipation of an audience's likely boredom, disquiet, or satisfaction is unusually visceral.
However they subsequently articulated concerns about what remained unknown – if they were not in preterm labour then what did cause the symptoms that they experienced?
The two alumni of Toynbee Hall set about dismantling what remained of Victorian civic autonomy.
In his diary for December 1891, Gide wrote: "Wilde is piously setting about killing what remained of my soul".
Before the second installment of Linda Richichi's three-part Soul Vision workshop started at Wainwright House in Rye on a recent sunny Sunday, Joanne Mendola was feeling hopeful about dissolving what remained of her spiritual blockages.
Indeed, what took place off-street was what remained striking about this structure.
In 1985 what remained of the company came into the ownership of Ramadan Güney, who set about reviving what remained.
American officials dodged questions about what obstacles remained to an accord on strategic defenses.
Though information about what happened remained fragmentary and often contradictory, the Kursk was apparently damaged by an explosion and partly flooded on Saturday during training maneuvers of Russia's Northern Fleet.
