To get back to their roots, Chang Chi-lang encouraged his children to go to mainland China. His three sons first went to Japan to complete their medical education, then all went to Manchuria to practice.
為了尋根，張七郎鼓勵兒女前往大陸，他三個兒子，先後於日本完成醫學教育後，都前往大陸東北行醫。