The defending champions, who had lost their first two games of the new season, have now bounced back with four consecutive wins to move up to second place.
The 2014 world champion has been hit with full vigour by the unpleasant effects of the COVID-19 pandemic.
In a newly-built racquetball court, Liu Shangying was coaching two college students on their first day of playing racquetball.
Fiorentina loanee Pedro put the hosts ahead with a low strike before Bruno Henrique converted from the penalty spot after a Leo Gomes handball.
Jiangsu took to attacking the basket from the paint early on, before going up 20-9 on a 14-0 surge.
With the result, Dortmund now sits third in the table, whereas Freiburg suffered its first defeat and slipped to the 11th spot.
Sichuan was held to six of 26 on three-pointers and out-rebounded its opponents 44-30.
"Many players have little experience of playing in WCBA. I'm satisfied with their desire to win and fighting spirit," she noted. Enditem
Xinhua looks at some of the major talking points ahead of Thursday's opening day of fixtures in CONMEBOL's road to Qatar 2022.
"I can't get to sleep last night because I was so excited," The 43-year-old swimming fanatic said. "And I was not the only one - every one of our online group was awake late at night, cheering each other up for today's event."
"They're the best team in the league, and proved it today," said Shandong coach Luka Sjekloca.