The heart of another is a dark forest, always, no matter how close it has been to one's own.
父子之间要亲爱,君臣之间要有礼义,夫妇之间要挚爱但还要有内外之别,老少之间有尊卑之序,朋友之间要有诚信之德。
汽车不仅是交通工具,更是生活方式的载体。