<prompt> Qedela umusho olandelayo: UChang wenza i-Olympic yakhe yokuqala, njengombhukudi omncane kunabo bonke eNingizimu Korea eneminyaka engu-14 ubudala, kuma-Olympic Asehlobo ka-2000 eSydney. Lapho, uhlulekile ukuqhubekela kuma-semifinals kunoma yimiphi imicimbi yakhe yomuntu ngamunye, eqeda indawo yamashumi amane ku-100 m freestyle 58.77, kanye namashumi amane nanye ku  <response>: 50 m ngesitayela samahhala 26.88. Ubuye wabeka indawo yeshumi nesikhombisa, njengelungu leqembu laseNingizimu Korea, emjahweni we-4 × 100 m medley relay 4:16.93. 