Hong Kong's swimming queen Siobhan Haughey won a silver medal on Tuesday at the second stop of the World Aquatics Swimming World Cup in Incheon.

She completed the women's 400 metres freestyle race in three minutes, 58.06 seconds, 1.28 seconds behind gold medalist, Mary-Sophie Harvey of Canada.

Japan's Waka Kobori rounded up the podium, while 19-year-old SAR swimmer Ng Lai-wa finished eighth with a personal best of four minutes, 18.03 seconds.

Haughey, who's about to turn 27, will have more shots at a medal in the coming days. She will feature in the 50 metres breaststroke, as well as her favourite disciplines, the 100 metres and 200 metres freestyle.

The event is part of a qualifying series for the World Aquatics Championships in Budapest at the end of this year.

Held over three consecutive weeks, the series began last week in Shanghai and concludes in Singapore early next month.

Haughey bagged two golds and a bronze at the Shanghai leg.