Australian breaststroke champion Zac Stubblety-Cook expresses disappointment over the Chinese swimming doping scandal involving 23 swimmers testing positive before the Tokyo Olympics.

Despite the controversy, Stubblety-Cook focuses on his performance and emphasizes faith in the World Anti Doping Agency (WADA) system, which is undergoing an independent review.

The scandal has affected athletes, including Australia's bronze medal-winning women's 4x200m freestyle relay team.

Stubblety-Cook, motivated by his previous silver medal behind China's Qin Haiyang, is working on improving his fitness for the upcoming Olympic selection trials in Brisbane and the Paris Games.

The Australian team, led by Ariarne Titmus, is confident in their potential to excel in Paris, with the trials determining the final team for both the Olympics and Paralympics.

Discussions on WADA's transparency are expected to continue during the Paris Olympics, with the trials being broadcast live on Channel 9.