Chang Pi-yun's approach? She told her son, "If you want to use a limited clothes allowance, you can buy them yourselves. Or Mama can come along as you choose and she pays."
張碧雲的方法是：「你要用有限的零用錢自己去買，或是你看好了讓媽媽陪你去挑、幫你付錢，自己選擇吧。」