Three years ago Chang joined a volunteer medical group sponsored by the ICDF, which traveled to Costa Rica to serve a remote native Indian community. Moreover, on her own time and with her own financial resources, she helped establish an elementary school there.
三年前，張幸運加入國合會志工團，成為哥斯大黎加巡迴醫療團的一員，到偏遠的印地安部落服務，並利用志工團以外的時間與資源，為印地安部落創立了一座深山小學校。