The win, which came as the 35th from 36 matches this season, also ties him with Rafael Nadal for a record 14th Roland Garros quarterfinals appearance.
Loew had criticized the additional friendlies this year, as they are downsizing his time window for training sessions. Additional training is of more value for a team in a transition process than test-matches Loew stated.
"I feel quite happy that we finally have games to play," said Inner Mongolia's center Li Yueru, who finished with 28 points and 14 rebounds in a 44-point rout of Hebei.
Once inside the stadium, they refused to sit down and sang almost non-stop, even when their team looked doomed at 2-0 down at half-time.
Earlier on Friday, Jiangsu defeated Shanghai 3-0 (25-17, 25-20, 26-24) in the third-place match.
Al Nassr broke the deadlock with a penalty in the 35th minute before Abdi Mehdi Qara leveled for Persepolis just six minutes later.
The 30-year-old, who has been capped once for Argentina's national team, has struggled for opportunities since joining Boca from Mexico's Cruz Azul in January 2019.
"We played a little tight at the start. We improved later in the match, and showed our character," said Zhejiang coach Gu Jiaqing.
Peru head coach Ricardo Gareca has insisted he won't use the team's weakened squad as an excuse for any poor performances.
In the women's action, Iga Swiatek, who shocked top seed Simona Halep in the fourth round, continued her momentum by dispatching Italy's qualifier Martina Trevisan 6-3, 6-1 to become the first Polish woman to reach the semifinals at Roland Garros in the open era, one round further than former world No.2 Agnieszka Radwanska.
"My club had been closed for six months due to the COVID-19 pandemic and just reopened a month ago," said Zhang, adding that he has received dozens of reservations for this holiday one week in advance, mostly from young people.