Starting as an apprentice Apart from the character of the younger brother--for whom Chang had all along wanted to use an actually mentally retarded person--the cast is composed of non-professionals solely for reasons of cost: he only had NT $ 8 million to spend.
除了片中的弟弟，一開始張作驥就打算用真正的智障孩子，其餘演員之所以選用沒有表演經驗的非職業演員，和這部電影只能籌措到八百萬資金有很大關係。