China won five gold medals in the pool as they extended their lead at the top of the medal standings at the Rio Paralympics on Friday.[Special coverage]
The Asian nation also secured four gold medals in athletics, two in cycling and one each in shooting and powerlifting to finish the day with 20 gold medals.
Britain were second in the standings with 12 gold medals and Ukraine were third with seven.
China's first victory of the day came when powerlifter Hu Dandan smashed her own world record to win gold in the women's -45kg division.
The 27-year-old lifted 108kg, to break the previous record of 106kg, which she set in Kuala Lumpur in February.
Nigeria's Latifat Tijani took silver with a lift of 106kg and Britain's Zoe Newson claimed bronze with a best effort of 102kg.
A delighted Hu, who had already secured the gold medal before her world record lift, said Rio had become "her lucky place".
"I could not sleep all night yesterday, but I knew I could get a medal and I did," she said. "I really love Rio because it is my lucky place. It is a place that has made my dream come true."
Hu, whose impairment is the result of polio, competed in wheelchair tennis at the Beijing 2008 Games before switching to powerlifting in 2009.
She adapted quickly to her new sport and by 2014 was the Asian Para Games champion in the -45kg category.
Yang Chao paid tribute to the National Paralympic Committee of China after winning gold in the men's 10m air pistol SH1.
Yang led the final from start to finish, ending with 198.2 points, to beat South Korean rival Lee Ju Hee by just 2.6 points. Uzbekistan's Server Ibragimov claimed bronze with 172.1 points.
"This is my first Paralympic Games and my first medal," Yang said. "I'm very excited and I put a lot of effort into this. My family and the Paralympic association put in so much to me, so it is nice to reward them too."
The 37-year-old opened up a 2.5-point lead after two round and showed nerves of steel to stave off Lee's challenge in the final rounds.
He attributed his coolness and pressure to a combination of natural talent and training.
"There's no strategy, I just did daily training very well and it's just basic skill coming through," he said.
Xu Qing broke his own world record to win his third straight Paralympic 50m butterfly S6 gold medal.
The 23-year-old finished in 29.89 seconds to beat the record he set at the London 2012 Games by one hundredth of a second.
It was a clean sweep of the medals for China with Zheng Tao taking silver in 29.93 and Wang Lichao bronze in 30.95.
"I didn't expect that. It has been my record for four years, I didn't think I would go that fast again," said Xu, who has now won eight Paralympic gold medals.
"This is the best reply to my friends and family because for a long time they have been trying to convince me not to race, to retire, but this gold shows that I was right."
Xu, who lost both arms after a car crash when he was six, said he was unsure if he would compete at the Tokyo 2020 Games.
"It might be my last Games, it depends on the condition of my body. I might do another if I feel it. But probably not."
