Formerly banned Chinese swimmer Sun Yang said he has no plans to retire and is driven by the desire to push his limits after finishing sixth in the men's 400 metres freestyle at China's National Games in Shenzhen and sliding into Wednesday's 200 metres final.

Three-times Olympic champion Sun, 34, was banned from competing for four years and three months for a dope test violation in 2018 in which he and members of his entourage smashed vials containing blood samples.