The 16-year-old swimming sensation followed on from her stunning victory at the 200m medley on Friday with an equally impressive display in the 400m race.
Ye clocked 4mins 26.93 seconds, ahead of Hungarians Katinka Hosszu and Zsuzsanna Jakabos.
Mumbai Roundup: 9 incidents that took place this week
Photos: Ajay Devgn, Parineeti, Tabu at 'Golmaal Again' trailer launch
Photos: Dipika Pallikal Karthik oozes oomph in bikinis and sarees
Photos: Kareena Kapoor Khan's grand birthday bash
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing