On the Shandong side, Yang Hengyu contributed 16 points, while Qiao Yanzi added 12.
The estimated timing for the start of training camp will be announced at a later date.
"We haven't played for a long time. We played a bit tight today, but took our chance at last," said Shanxi coach Li Ge.
Elsewhere, Wolfsburg and Augsburg shared the spoils after playing out a goalless stalemate. Enditem
"We will see several unusual results not only in the Bundesliga but all over Europe. I think we are ahead of an exciting season," the 60-year-old predicted.
FC Barcelona have had a promising start to the campaign under new coach Ronald Koeman, scoring seven goals in their opening two matches, with the midfield pairing of Sergio Busquets and Frenkie de Jong giving a solid base for the attacking quarter of Ansu Fati, Leo Messi, Philippe Coutinho and Antoine Griezmann.
Although it is still very early days, the signs are much better at FC Barcelona than many expected before the season started. Ronald Koeman's team has won its first two games with ease, netting a total of seven goals without conceding and the image on the pitch has been much better than the side that looked sad and tired during Quique Setien's time in charge.
The Argentinian bested Nadal in the Rome Masters quarter-finals last month for his first win against the world number two.
"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 recently-crowned US Open champion.
In the first set, Shandong and Tianjin traded leads from the offset. After Shandong's Sun Jie left the court through injury, Tianjin leveled the score 15-15 and then took the set 25-21.
Her amazing shooting performance was highlighted by six 3-pointers from nine attempts, and her teammate Wang Haimei got 13 points. Shen Yi got a team-high 13 points for Dongguan and Hu Ke added 10.