A Thrillist article on the 27th reports on the phenomenon of round-trip flights to and from China being cheaper than many domestic ones. Pittsburgh is among the places with surprisingly cheap flights to and from large Chinese cities at the moment.
According to Google Flights, a ticket from Pittsburgh to Chengdu on October 18th with an October 28 return will cost $498 round-trip. Same for Beijing. And same for a trip to Shanghai, but if you don't want a 34-hour trip, you'll have to pay an extra $135 to get there in half the time.