After graduating from the Taichung Institute of Technology, Chang began to think about ways to make a living. As his family was a landowning one, it was impacted as the government began to claim more and more of the family properties in carrying out such policies as the 37.5 % reduction of farm rent and the equalization of land rights.
台中商業學校畢業後，原本坐收田租的地主之家，因國民政府來台後推行「三七五減租」、「平均地權」，土地慢慢被政府徵收，張允中也開始思索營生問題。