The cultural connotation of fetal hair brushes has been spread since the Tang Dynasty. A fetal hair pen refers to a writing instrument made of newborn fetal hair, which has a strong cultural connotation. First of all, lanugo hair symbolizes the continuation of life and the inheritance of memory. Using the lanugo hair pen is passing on and protecting a life. Secondly, the production of fetal hair brushes requires multiple processes, which consumes time and energy. It can be regarded as an artistic creation and represents the spirit and skills of the craftsman.