"We prepared the game well, mentally and physically, but this is a real game, not a training," said Yang.
"We heard a very encouraging technical report from the Coordination Commission who informed us the technical preparations are on track and going very well," the IOC president said in a video conference after the IOC Executive Board meeting on Wednesday.
Hoffenheim gained a foothold into the clash as the clock ticked after Emin Bickakic and Dennis Geiger came close at the half-hour mark.
PSG on Friday also announced to have signed right back Alessandro Florenzi on a one-year loan from Italian Serie A club Roma, adding that they have a purchase option when the loan ends next summer.
At the start of the second set, Azarenka broke again for a 2-0 lead, but from there Osaka fought back to break her opponent's serve twice and took a 4-3 lead.
Chemnitzer FC took the reins and disrupted Hoffenheim's build-up work in the opening stages, forcing Hoffenheim goalkeeper Oliver Baumann into action twice with early chances.
The 2020 season ended disappointingly for Pep Guardiola's Manchester City, who never looked like catching Liverpool in the league and then, after beating Real Madrid, saw their European hopes destroyed by Olympique Lyon.
In a women's doubles semifinal, China's Xu Yifan teamed up with American Nicole Melichar to edge past Asia Muhammad and Taylor Townsend of the United States in three sets to reach the final. They will meet the unseeded pairing of Laura Siegemund of Germany and Vera Zvonareva of Russia in the final. Enditem
Jena's late chance was a wakening call for Bremen as new arrival Tahith Chong had all the time and space to finish off a fast break, scoring his first ever goal for his new club in the dying minutes.
Shandong went ahead in the 19th minute when striker Duan Liuyu miss-kicked the ball which flew into Graziano Pelle's way, and the Italian swept it in from close range.
As the participants have not taken football training in the first half of the year, all of them are excited at taking part in the tournament and have prepared for nearly two months before it gets started.