Outscoring its opponent 28-14 after the first quarter, Jiangsu was never really challenged by Shaanxi over the ensuing three quarters.
2. Neymar has Ronaldo, Pele in his sights
Shanxi captain Wu Tongtong was pleased to witness her former teammate's progress as both graduated from Changsha Changjun High School in central China's Hunan province and teamed up for the school in national high school tournaments.
Elsewhere, Santos rallied late to secure a 3-2 win at Goais. Marcos Leonardo, Jefferson and Marinho were on target for the visitor while Vinicius Lopes and Victor Andrade scored for Goias.
"We played a little tight at the start. We improved later in the match, and showed our character," said Zhejiang coach Gu Jiaqing.
Colombia will host Venezuela in Barranquilla on October 9 before facing Chile in Santiago four days later.
Jiangsu and Beijing are placed third and fourth in the championship group standings respectively. Enditem
With 3:04 left on the clock of the third period, Fujian kept chasing the score-line and trailed by 57-66, but Zhejiang reclaimed a double-digit advantage through Dong Ke'er's three-pointer.
The two-time Grand Slam winner committed just seven unforced errors throughout the one-sided encounter and broke her opponent's serve six times.
That performance has put Athletic coach Gaizka Garitano under pressure and both he and Machin need wins to assure they are still in their jobs after the international break.
The 31-year-old, who is to face No. 7 seed Petra Kvitova in the next match, also became the first Chinese singles player since Li Na in 2012 to reach the fourth round at Roland-Garros.