Meanwhile, Sport Recife won 2-1 at Bahia, their third successive Serie A victory. Hernane and Marcao were on the scoresheet for the visitors while Matheus Saldanha netted for Bahia.
Two-time Grand Slam winner Kvitova had to bounce back from 1-5 down in the opening set against Canada's teenager Leylah Fernandez to set round-of-16 clash with Zhang.
Falcao, 34, has found his scoring touch for Galatasaray this season with three goals from the opening four rounds of the Turkish Super Lig.
"We inflicted great pressure on our opponents throughout the game. Offensively we played inside out and showed our level," Inner Mongolia coach Zheng Wei reflected.
It was also the 96th victory at Roland Garros for the Spaniard, who is seeking a 20th Grand Slam title to equal Roger Federer's record.
With five players on target, Atalanta enjoyed another convincing victory as the Dea crashed Cagliari 5-2.
A second-quarter surge helped Xinjiang take over down the stretch over Wuhan. Although falling behind 23-21 early, they forged a 38-25 advantage entering the second half, including six points from Wang Lili.
The 45-year-old Li, who spent his entire playing career with Luneng, was one of the key members in China's only World Cup experience in 2002. As a player, Li helped Luneng win one Chinese top-flight title, three CFA Cup titles and one CSL Cup title.
"I'm very, very happy to be in the semifinals again and here at Roland Garros," Nadal said on court. "No doubt that this is the most important place for me and the most beautiful place to play."
In other games in Chengdu, after a goalless first half, Beijing Renhe broke the deadlock in the 57th minute to claim a 2-0 victory over Suzhou Dongwu. Taizhou Yuanda defeated Inner Mongolia Zhongyou 2-0.
Earlier on the Court Philippe-Chatrier, men's singles third seed, Dominic Thiem claimed another straight-set victory over 28th seed Casper Ruud, beating the Norwegian 6-4, 6-3, 6-1 to set up a last-16 clash against the winner between 2015 champion Stan Wawrinka and Hugo Gaston.