Liu Yuchen/Du Yue earned the first point for Qingdao after 48 minutes by beating Qiu Zijian/An Yu of Anhui 11-8, 7-11, 10-12, 11-9, 11-9 in the mixed doubles.
After a discussion of around 10 minutes between tournament referees and officials, Djokovic was disqualified from the match in accordance with the rules.
"Our opponents played very well today. We were not decisive enough. In the deciding set, we tried to play our tactical discipline and not be influenced by our rivals. We made it," said Liu.
"I've been playing well the past couple of weeks, training well, focussing on the right things, maintaining that level of performance and hoping for the best. I'm feeling confident about my game and taking that to every match I play."
For good reason, the German coach refuses to talk about winning the 2021 title or naming his side as one of the favorites.
Cheptegei is already the 2019 men's 10,000 world champion and world cross country champion.
"I feel satisfied with my performance after the first seven rounds. I tried my best to earn points for my team in every game. As young players, we should seize the opportunities to improve ourselves through such games," said Li Shipei, who rallied from two sets down to win in the men's singles, securing the victory for Ruichang.
Elsewhere, Sao Paulo beat Fluminense 3-1 at home thanks to second-half goals from Brenner, Luciano Rocha and Vitor Bueno. Wellington Silva was on the scoresheet for the visitors.
Djokovic immediately rushed over to check if she was okay and placed his hand on her back as the judge struggled for air. After a few minutes she was able to get up and walked off the court.
BERLIN, Sept. 7 (Xinhua) -- Entering his 15th year as Germany's head coach makes Joachim Loew the longest-serving national manager in international football.
BEIJING, Sept. 7 (Xinhua) -- Liu Shiwen and Zhu Yuling will spearhead the Chinese squad as they each bid to win the women's singles title at the 2020 ITTF Women's World Cup.