Liu Jiacen pocketed a game-high 29 points and 10 rebounds. Cao Junwei led Shandong in points (26), rebounds (5), and assists (4).
Another six 3s pushed Zhejiang's lead to double figures at the end of the third quarter.
Xinjiang's Han Xu finished with a team-high 19 points. Liu and Wang each had 17.
Bragantino's night went from bad to worse when Thonny Anderson was shown a straight red card for a reckless tackle on Edenilson with five minutes remaining.
Beijing and Shandong opened their game without too much intensity but the former ruthlessly embarked on a 13-0 run and closed the first half with a 15-point lead.
The record Roland Garros winner grabbed it, firing an ace to end the two-hour-and-41-minute final with a love game. He then kneeled down, smiled widely and pumped his arms. It was the fourth time he has won his favourite tournament without conceding a set.
Behind the top three, Racing Point's Sergio Perez finished a solid fourth, followed by the McLaren of Carlos Sainz, Pierre Gasly's AlphaTauri and Charles Leclerc in his Ferrari.
The score changed for the first and final time in the 60th minute when Scotland's Stephen O'Donnell sent a nice center from the right side to Queen's Park Rangers' striker Lyndon Dykes who was left unguarded by Slovak defenders and had no trouble scoring from close range on the first shot on goal of his team.
The second quarter was contested more fiercely, with many body contacts and fouls. Fujian managed a three-point advantage at half-time.
"At the current stage, I put 70 percent in turning to a coach, with the remainder still playing on the court."
Fujian's Wang Qiuyi scored a career-high 29 points but still couldn't stop the team from losing. Sichuan kept its double-figure margin during the ensuing three quarters, with its biggest lead at 30 points with two minutes left to play.