The first child he made friends with came to know Chang when he was showing off his skating skills at an ice-rink as a senior high school student. Chang went on to study architecture at university and work in an architects 'office, and by the time he went to New York to continue his studies his young acquaintances numbered at least one thousand.
張世宗是在高中時，在溜冰場露了一手花式絕技，引來了第一個小朋友，後來他念了建築系，在建築師事務所工作時仍舊不改其樂，赴紐約念書前，認識的小朋友總數已不下千人。