Ervina Lim, 14, swims in the women's 400m freestyle event. She finished fourth in the 13-14 age group with a timing of 4:37.00. (Photo 6 © Chua Kai Yun/Red Sports)

Ervina Lim, 14, swims in the women’s 400m freestyle event. She finished fourth in the 13-14 age group with a new PB of 4:37.00. (Photo 6 © Chua Kai Yun/Red Sports)