Dongguan established a 22-12 advantage after the first quarter, with Dilana scoring 10 points to lead the way.
As one of title contenders going into the current campaign, Xinjiang was back on a winning track following its defeat to Sichuan in Thursday's opener.
In women's actions, top seed Simona Halep took sweet revenge on her opponent from last year's French Open defeat, trouncing American teenager Amanda Anisimova 6-0, 6-1 to progress.
Defending champion Nadal was one of the "victims" of this epic clash, as his quarterfinals match against Sinner, which was scheduled as the last match of the day,had to start later and ended in the early hours of Wednesday.
The Austrian, and two-time finalist in Roland Garros in 2018 and 2019, reached the fourth round in Paris for the five consecutive year.
Rafael Nadal hits a return during the men's singles third round match against Italian Stefano Travaglia at French Open in Paris on Oct. 2, 2020. (Photo by Aurelien Morissard/Xinhua)
In other games in the Meizhou division, Zhejiang Energy Greentown beat Jiangxi Liansheng 2-0, and Shaanxi Chang'an Athletic defeated Liaoning Shenyang Urban 1-0.
The 2020 Chinese Super League's first stage ended on September 29 after two months and 112 games. The next stage will begin with a two-legged knockout round from October 16. Enditem
Next up for Halep is another 19-year-old youngster, Iga Swiatek of Poland, whom Halep defeated in the round of 16 here last year.
Beijing, whose national team duo of Shao Ting and Gao Song had joined Sichuan during the offseason, lost to Jiangsu on Thursday. They regained a fine form on Sunday, with four players' double-figure points leading the way. Qi Yu posted a game-high 20 points. Shi Xiufeng and Qi Site chipped in 14 and 13 respectively.
The 17-year-old assist-giver remained in the thick of things as Reyna's through ball met Haaland, who drilled his brace from the edge of the box into the top left corner with 66 minutes played.