Two-time Olympic medallist PV Sindhu remains the lone surviving Indian shuttler in the competition after she sailed into the women’s singles quarter-finals of the Thailand Open here on Thursday.

The World No. 7 Sindhu, seeded sixth, took just 37 minutes to get the better of Sim Yu Jin, who had played a pivotal role in Korea’s Uber Cup win, 21-16, 21-13 in a second round match.