Hong Kong on Tuesday brought home two more gold medals at the Asian Games, with swimmer Siobhan Haughey and the men's rugby sevens team reaching the top of the podium.

Star swimmer Siobhan Haughey set a new Asian record of 52.17 seconds in the women's 100-metre freestyle final, beating China's Yang Junxuan by almost a full second.

It is her second gold medal in Hangzhou, where she has also won two bronzes.

The swimmer told HOY TV that she is satisfied she managed to achieve her best time in the race, something Haughey said she has not done in two years.

"I didn't think too much [about setting a new Asian record]. I know I'm capable of swimming my best time, and I managed to do it in the end so I was happy."

On the rugby pitch, the men's sevens team managed to defend their Asian Games title, defeating South Korea 14-7 in the final.

Cado Lee and Liam Doherty scored the tries on either side of halftime, and the SAR team survived Russell Webb's trip to the sinbin by conceding just one try.

Hong Kong's Yiu Kam-shing, who's said he's retiring after the Games, said he was ecstatic he could go out on a high point.

"I'm still enjoying the moment, I can't describe how I feel. It's so hard to describe.

"The Hong Kong rugby team has taken another step. It's so hard to defend the title, and I think we can control the pressure, we have proven that we can."

The women's rugby sevens team also enjoyed success, taking home the bronze medal in a hard-fought 7-5 victory against Thailand.

Chong Ka-yan scored a first-half try before the SAR conceded a try in the second. Hong Kong relied on strong defence to secure a spot on the podium.

Elsewhere, windsurfer Ngai Wai-yan won silver in the RS:X women's event, coming just two points short of her opponent from Thailand.

The two windsurfers had jostled back and forth throughout the competition.

The sailing pair of Russell Aylsworth and Akira Sakai, meanwhile, claimed a bronze medal in the men’s 49er skiff race.

The SAR pair finished with the same net points with the South Korean team. But because the Hong Kong team came first in more races, they claimed a medal on the podium.

There were two other bronzes for Hong Kong, one from epee fencer Cedric Ho, and the other from the equestrian team.

Ho lost to Japan's Akira Komata 15-12 in the semifinal, conceding a 6-nil run in the middle of the second period.

The trio of Jacqueline Siu, Samantha Chan and Annie Ho finished the team dressage event with a score slightly lower than that of China for third place.

Meanwhile in tennis, Hong Kong's Coleman Wong advanced to the men's singles quarterfinals. He came from 6-1 down in the third-set tie-break to score seven straight points in defeating China's Wu Yibing.

Things did not go as well for star boxer Rex Tso, however, who was defeated by a Thai boxer in the round of 32.

After three days of competition, China top the table with 53 gold, 29 silver and 13 bronze medals, followed by South Korea and Japan.

Hong Kong remain fifth in the standings, with five gold, five silver and 11 bronze medals.