Later on Thursday, Beijing also celebrated a 3-0 (25-16, 25-15, 25-21) victory against Yunnan.
Bruno Labbadia's men gained momentum but Frankfurt stood firm and protected its lead until the final whistle.
Milan doubled the lead four minutes after the break as Ismael Bennacer was charged down by Riccardo Orsolini in the box, Ibrahimovic stepped up to convert the penalty.
LONDON, Sept. 21 (Xinhua) -- Manchester City kicked off their Premier League season with a 3-1 win away to Wolves on Monday evening.
Sergio Busquets, Frenkie de Jong, Philippe Coutinho and new arrival Miralem Pjanic battle it out for three spots in midfield with Francisco Trincao likely to wait his turn on the bench.
Newly promoted Huesca then visit Valencia, who should have winger Denis Cheryshev and keeper Jasper Cillessen both available after last weekend's defeat in Vigo.
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.
Movie theaters in China raised their cap on seating to 75 percent of capacity starting Friday, up from the previous cap of 50 percent, spurring the further recovery of the world's second-largest box-office market amid the COVID-19 epidemic. Enditem
"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."
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.
His agent Oliver Fischer announced the player wouldn't accept the club's decision and may take legal action to be allowed to return to regular training. According to Fischer, Szalai refuses to leave the club.