"inheritance" is an important traditional Chinese value. It is the practice of passing on knowledge, skills, experience, and information from one generation to another. It has long played an important role in human societies.
The design is inspired by this Chinese value and use the Chinese Architecture technique, mortise to connect two pencil. Without the previous pencil, the new one become meaningless. Without the new pencil, the old pencil have to throw away. The design not only connect the pencil but also the relationship.