The 26-year-old clocked 1:05:34 to win the Prague 21.1km, a half marathon race featuring only female runners with no male athletes or pacers.
Wuhan's 23-year-old bench goalkeeper Wang Zhifeng kept a clean sheet in the second half, and might become a start in the future together with Dong, who joined Wuhan from Hebei China Fortune.
As the match progressed, Joachim Low's men retreated with their narrow lead and kept all their men behind the ball.
Former two-time Olympic canoeing champion Meng Guanliang, who called on the public to live a green and healthy life at the closing ceremony, said he was "very excited" to be part of such an event.
Elsewhere, Belgium's Elise Mertens upset second seed Sofia Kenin of the United States 6-3, 6-3 to also make the last eight.
The 22-year-old netted again on the stroke of half-time with a powerful left-footed finish after Hyoran Kaue's assist.
After a discussion of around 10 minutes between tournament referees and officials, Djokovic was disqualified from the match.
But before the postponed Tokyo Games begins, Wang needs to test himself in his first competition of the COVID-19-disrupted season at the National Championships starting on September 26.
According to relevant anti-virus rules, any player who leaves the bubble has to pass a virus test and go through medical observation in isolation before returning, the paper said.
With white hair, sunglasses and professional sportswear, Gu is greeted by many people as he goes past them.
WASHINGTON, Sept. 6 (Xinhua) -- Fifth seed Alexander Zverev from Germany said he was "in shock" after top seed Novak Djokovic was defaulted from the US Open on Sunday.