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.
The 33-year-old will play 17th seed Pablo Carreno Busta the round of eight. The Spaniard dispatched German qualifier Daniel Altmaier 6-2, 7-5, 6-2.
Chaux, 28, replaces Napoli keeper David Ospina, who was barred from traveling after two players from the Italian club tested positive for coronavirus, the Colombian Football Federation (FCF) said on Monday.
Koeman's team looks faster, fitter and hungrier, with Philippe Coutinho getting involved and Leo Messi smiling again. There is a question mark over the lack of central defenders and with Clement Lenglet suspended against Sevilla on Sunday that looks to be their main weakness.
Wu Tongtong, who scored a game-high 30 points, helped Shanxi seal the win, while Fang Min pocketed a team-high 17 points for Henan. Enditem
In the 25km race, China's Gao Chongchong and Zhang Jiajing won the men's and women's group respectively.
"As a young team, playing against such a strong team as Xinjiang, we can learn and improve a lot," Li said after the match.
With Sichuan's offense bogged down, Dongguan retook the lead and delivered the final blow with efficient offensive late in the fourth to make it 78-71.
China's Shi Yanghe and Zhao Jiangqiong won the men's and the women's 65km races respectively.
With a perfect record in the new season, Jiangsu expects a tough route ahead as title contender Xinjiang awaits them on Saturday.
Former champion and No. 16 seed Stan Wawrinka was the biggest star who saw his run at this year's Roland Garros end on Friday. The Swiss star was turfed out by French wildcard and world No. 239 Hugo Gaston 2-6, 6-3, 6-3, 4-6, 6-0 in a five-set battle lasting over three hours.