Which of the 32 major events in the Paris Olympics has the most sub events and sub events? Not athletics, but swimming. It has 5 events including swimming (35 events), diving (8 events), synchronized swimming (2 events), water polo (2 events), and open water (2 events), with 49 events, surpassing the 48 events in athletics.

On August 5th, the synchronized swimming competition at the Paris Olympics will begin. The Chinese sports delegation participating in the Paris Olympics has female athletes in all five swimming events. In previous Olympic Games, Chinese female athletes have won gold medals in swimming and diving, and synchronized swimming is likely to be the third item of the Chinese swimming team's "zero breakthrough" in gold medals.