Dee ihe na-aga n'ihu maka paragraf a - Chang mere egwuregwu Olympic mbụ ya, dịka onye na-egwu mmiri kachasị na South Korea (afọ 14), na 2000 Summer Olympics na Sydney. N'ebe ahụ, ọ gara n'ihu na ọkara ikpeazu na nke ọ bụla n'ime ihe omume ya, na-emecha nke iri anọ na 100 m freestyle (58.77), na nke iri anọ na otu na 50 m freestyle
(26.88). O tinyekwara nke iri na asaa, dịka onye otu ndị otu South Korea, na 4 × 100 m medley relay (4: 16.93).