In the day's other match, South Korean striker Son Heung Min scored four goals as Tottenham produced a second half blitz to win 5-2 away to Southampton.
Fans and half of the club are puzzling about who could be the rescuer leading the side out of this deep crisis. Former Schalke and Leipzig coach Ralf Rangnick is one name in the list.
Instead of 2,100 fans, only a few hundred might go, while Sevilla is not expecting more than 500 followers.
In the other match of Group C, Almoez Ali scored his third goal of the league to help Al Duhail SC beat Persepolis FC 1-0 and overtake the latter to lead the group.
Zinedine Zidane's side goes into the game on the back of a 0-0 draw away to Real Sociedad a week ago, in a game it controlled for long periods without creating the chances it needed to win.
Napoli also got their new season off to a good start as the Coppa Italia holder dominated Parma 2-0 with Dries Mertens and Lorenzo Insigne on target.
Chengdu broke the deadlock in the 52nd minute with a low drive from Serbian forward Nikola Djurdjic at close range to make it 1-0.
Valencia drew level when Maxi Gomez scored an impressive goal in the first minute of the second half following a pass from Daniel Wass but Aspas had the final word with a dipping free kick in the 57th minute.
Both sides struggled to create clear scoring opportunities, but as the match seemed to head for a draw, a low drive from Quintana put Chengdu ahead in stoppage time.
"With Alexander Sorloth, we have signed our desired candidate for the vacant striker position," Leipzig's sporting director Markus Krosche said. "He is a physical and technically gifted player but also good in the air and a finisher in front of the target."
"We could see sport is coming back slowly but surely," Bach said. "A number of big sports events have been successfully organized recently, including matches of Japanese leagues at the weekend and also some complex events like Tour de France."