Because Fu taught a course at the academy, the fine arts student already knew what Fu had to say about painting theory. So Chen was the one who went to the teacher's home at night to learn and paint. In return, he would bring back samples of Fu's work (which were available only to students taking private lessons) for his friend to study. In this way both of them benefited.
因為美術科本身有傅先生的課，理論上課時已講過，他就要求同學讓他晚上去老師家聽課畫畫，習作部分他會帶傅老師的畫稿回來給同學觀摩，兩個人都可以受益。