Ronaldo's penalty in the 44th minute wiped out Veretout's spot-kick, just two minutes before the Frenchman restored the lead for the Giallorossi.
The victory ended a tumultuous two-week period for Flamengo. Following the defeat in Quito, the Rio outfit reported 16 COVID-19 cases in their squad, leaving them with only three regular first-team players for their Brazilian Serie A visit to Palmeiras last Sunday, which ended in a 1-1 draw.
Dalian had the chance to score the equalizer but Salomon Rondon's free-kick smacked the woodwork.
Former world No. 1 Halep, who has just clinched the title in Rome earlier this week, cruised past Tormo 6-4, 6-0 to advance, at the same time extended his winning streak to 15 matches in a row.
Fujian had managed a 4-1 start in the third set but Jiangsu quickly overtook the lead and extended it to 15-10.
Vinicius Paiva put the hosts ahead by tapping home just after halftime before Lucas Evangelista equalized with a long-range effort.
Russia's Daniil Medvedev, seeded fourth, was unable to clinch his first win at Roland Garros after being shocked by Hungarian Marton Fucsovics 6-4, 7-6(3), 2-6, 6-1. It was the fourth successive first-round-exit for the 2019 US Open finalist at the French Open.
In a tightly contested first quarter, the two sides saw many lead changes before it was knotted at 21-all.
Although the referee had already blown the final whistle, VAR awarded a penalty. Then Bruno Fernandes, who had conceded the penalty that gave Brighton the initial lead, smashed the ball into the roof of the net.
Ye is also the Asian record holder of the women's 200m individual medley in 2:07.57.
Earlier on Sunday, Wissam Ben Yedder struck in each half as nine-man Monaco held on to overcome Strasbourg 3-2 at home. Right-back Ruben Aguilar added another for Niko Kovac's side in stoppage time of the first half.