Ye Shiwen of China competes in the women's 200m breaststroke final at the Hangzhou Asian Games, east China's Zhejiang province, Sept 28, 2023. (PHOTO / XINHUA)

JINAN, China - Olympic champion Ye Shiwen claimed the women's 400m individual medley title at the 2023 Chinese National Swimming Championships here on Thursday.

The 27-year-old finished the 400m IM final in 4:38.58, roughly 10 seconds behind her own Asian record.

"I am better in the breaststroke and freestyle, which gave me confidence in winning the race," Ye said afterward.

"Previous training was sufficient (for winning this race). I am hoping to challenge myself in order to find out my capacity," she added.

Qin Haiyang of China competes during the Men's 200m Breaststroke Final of Swimming at the 19th Asian Games in Hangzhou, east China's Zhejiang province, Sept 28, 2023. (PHOTO / XINHUA)

World champion Qin Haiyang won the men's 200m breaststroke final in 2:09.45, adding to his victory in the 50m breaststroke.

The 24-year-old Qin revealed that he has been adjusting his technique since the Hangzhou Asian Games.

READ MORE: Qin gets men's 50m breaststroke gold in China's championships

"It is not an easy task. Any tiny change in technique matters a lot. I think I need more time in this process," Qin said.