After the break, Union continued on the front foot and got their reward in the 49th minute when Marcus Ingvartsen had all the time and space at the edge of the box to slot home past Zentner into the far corner.
Palmeiras has not lost since a 1-0 defeat to Corinthians in the Sao Paulo state championship on July 22.
"It's not easy for us to return to court. I always want to say thanks to all medical staff across the country for giving us a safe environment to play. We appreciate it a lot," Wu said.
The 31-year-old also became the first Chinese singles player since Li Na in 2012 to reach the fourth round at Roland-Garros.
The men's quarter-finals will also continue on Wednesday with world number one Novak Djokovic facing Spain's Pablo Carreno Busta and Greek fifth seed Stefanos Tsitsipas playing Russian Andrey Rublev. Enditem
Rafael Nadal of Spain hits a return during the men's singles third round match between Rafael Nadal of Spain and Stefano Travaglia of Italy at French Open tennis tournament 2020 at Roland Garros, in Paris, France on Oct. 2, 2020. (Photo by Aurelien Morissard/Xinhua)
It is Athletic Bilbao's first signing since January 2019.
"If you impose yourself from the very beginning on the court, which I have in those first three matches here, then it makes it hard for them to really believe that they can come back and make a turnaround in the match," said the 2016 champion, who is seeking for an 18th Grand Slam title at Roland Garros.
Sevilla presented their last two signings of the summer with Karim Rekik and Oussama Idrissi joining Julen Lopetegui's side, who once again look to have worked well in the transfer market, despite failing to sign Real Sociedad's Willian Jose.
Bolivia have not qualified for the World Cup since 1994, when they were eliminated in the group stage in the United States. Their only other appearances in the competition came in 1930 and 1950. Enditem
Shaanxi trailed for most of the game, but outscored Wuhan 23-18 in the last quarter to grab the morale-boosting win.