Li shot 12 of 14 from the field to finish with 28 points, along with 14 boards, in Inner Mongolia's wire-to-wire victory, leading five players who finished with double-digit in points.
Both the Women's World Cup (November 8-10) and Men's World Cup (November 13-15) will be held in Weihai, east China's Shandong province, while the Finals will return to Zhengzhou, Henan after 2019 from November 19 to 22.
"I'm very happy. It was a great match, I didn't make any mistakes. Casper is a really great player, very attractive to play, I think there were many good rallies, it was a good match from both of us," said the newly-crowned US open champion.
The Czech player fired 23 winners in the match in which she converted four of her nine break points. Despite missing a chance of serving for the win in the eighth game of the second set at 5-2, she clinched it when opportunity appeared again in the tenth to wrap up the victory with a love game.
Vanderlei Luxemburgo's men are now third in the 20-team Serie A standings, just two points behind leader Atletico Mineiro, who has a game in hand.
Jiangsu took to attacking the basket from the paint early on, before going up 20-9 on a 14-0 surge.
"Despite only one week, she has improved a lot since we met last time. She is very young, but she has got everything on the court. Last time in Strasbourg, she didn't go into the game so quickly and played not so steadily. But this time, I can feel her confidence has boosted after winning two rounds at a Grand Slam," the former world No. 23 added.
The win also improves the Serbian's season record to a stunning 34-1. The only defeat came in a disqualification earlier this month at the US Open, where he hit a ball in frustration which struck the line judge on the neck.
Dong contributed 26 points, five boards and six assists to Zhejiang, while her teammate Huang Jiali pocketed 26 points and 10 rebounds. Wang Jiaqi of Zhejiang added 11 points, plus 12 assists. Enditem
Dilana took center stage early on by scoring seven points in a row, while Yang Shuyu provided much-needed help beyond the arc. The duo combined for 17 points in the first quarter to propel Dongguan to a 22-13 advantage.
"I feel pretty happy for her. She played great today, and we didn't restrain her quite well. Witnessing her performance today, I feel that she has a bright future," Wu explained.