The top-seeded 18-year-old won the match 21-15 21-12 in merely 37 minutes to clinch her second Grand Prix Gold title after the Malaysia Open in May. (Agencies)
The Indian sensation, who was bestowed the Arjuna award this year, was ruthlessly dominant from start to finish in the lop-sided encounter against the seventh-seeded Canadian.
In the first game, Sindhu raced to a 7-0 lead within just two minutes of start of play before Li finally registered herself on the score sheet.
But the Indian was relentless in her attack and never allowed any breathing space to her world number 30 rival.
Although Li managed to reduce the gap between the two to 9-6 at one stage but Sindhu managed to keep herself in front.
In the end, it took just 16 minutes for Sindhu to pocket the first game 21-15.
The second game started on a slightly even note with both players going neck and neck for the first few minutes. The scores were level at 5-5 with Li displaying better command over netplay.
But Sindhu eventually broke through to go into the lead and was placed comfortably at 11-6 when the break was taken.
The Indian did not let the momentum shift even once after that as she piled on the points, showing better control of the baseline to emerge champion.
Sindhu walked away richer by USD 9,000 from the event which offered a total prize money of USD 120,000.
The top-seeded 18-year-old won the match 21-15 21-12 in merely 37 minutes to clinch her second Grand Prix Gold title after the Malaysia Open in May.