At the 2020 Tokyo Olympics, held in 2021, Yang contributed to China's gold medal in the 4x200 metre freestyle relay, with her team setting a world record. She also won silver in the 4x100 metre mixed medley.[7][8]
At the 2024 Paris Olympics, Yang and her team won bronze in the 4x100m freestyle relays and set a new Asian record with a time of 3:30.30, surpassing their previous record from the 2023 World Championships. Yang, who was in the starting leg, set a new Chinese national record in the 100-metre freestyle with a time of 52.48.[9] Yang's 51.96 final freestyle anchor-leg swim in the Mixed 4x100m Medley Relay race helped her team beat the previous world record time of 3:37.58 set by Great Britain at the Tokyo Olympics with a time of 3:37.55, however she and her team had to settle for the Silver medal as the U.S. swim team captured the Gold medal with a faster new world record time of 3:37.43.[10][11]
^Sports, Sina (23 October 2019). "军运会中国揽游泳七成金牌 杨浚瑄七冠封多金王". Sina. www.sports.sina.cn. Retrieved 23 October 2024. 杨浚瑄在本次军运会上一共取得七金((女子100米自由泳、女子200米自由泳、男女4乘100米自由泳混合接力、男女4乘100米混合泳接力、女子4乘100米自由泳接力、女子4乘100米混合泳接力、女子4乘200米自由泳接接力))。在所有42项比赛里,中国队拿下27金14银8铜,拿下近七成冠军,打破19项赛会纪录和一项全国纪录 - 男女混合4乘100米自由泳决赛,季新杰、何峻毅、朱梦惠和杨浚瑄 3分26秒04... (Yang Junxuan won a total of seven gold medals in these Military Games; women's 100m freestyle; women's 200m freestyle; mixed 4x100m freestyle medley relay; mixed 4x100m medley relay; women's 4x100m freestyle relay; women's 4x100m medley relay; women's 4x200m freestyle relay; in all, China's swim team won 42 of the pool racing events, consisting of 27 golds, 14 silvers and 8 bronzes... )
^Writer, David Rieder-Senior (15 August 2024). "Paris Olympics: United States-China Mixed Medley Showdown Was Best Race of Games". Swimming World News. Retrieved 22 October 2024. The U.S. clocked 3:37.43, with China just behind at 3:37.55, both marginally quicker than the world record set by Great Britain three years earlier in Tokyo, while Australia was plenty elite in a bronze-medal performance...
^Charles, Michael (3 August 2024). "record in 4 x 100m mixed medley relay". Paris 2024 - Olympics.com. Retrieved 22 October 2024. The United States won the swimming mixed 4 x 100m medley relay gold medal at Paris 2024 on Saturday, 3 August, recording a world record time of 3:37.43. The People's Republic of China grabbed silver with a time of 3:37.55, followed by bronze medallists Australia with a time of 3:38.76. The previous world record of 3:37.58 was set by Great Britain at Tokyo 2020, where Team USA finished in fifth. Team GB finished in seventh in Saturday's final. China and Australia also placed second and third, respectively, at Tokyo 2020.