Adam Peaty has voiced strong concerns regarding the participation of Chinese swimmers Qin Haiyang and Sun Jiajun in the men's 4x100m medley relay at the Paris Olympics, where China won gold. Both swimmers were previously among 23 athletes who tested positive for the banned substance trimetazidine ahead of the Tokyo Olympics, but were cleared to compete after a Chinese investigation attributed the positives to food contamination. Peaty emphasized the importance of fairness in sports, stating, "There’s no point in winning if you’re not winning fair," and suggested that athletes with repeated doping violations should be banned for life. The issue has drawn widespread criticism, including from Olympic icon Michael Phelps, who highlighted systemic flaws in the World Anti-Doping Agency's handling of such cases. Despite the controversy, the Chinese swimmers led their team to victory, edging out the USA for gold, while Great Britain finished fourth. This incident has reignited discussions about doping regulations and fairness in competitive sports.