idiom > make a living by writing inkstone
Contents
Pen Yantian
  Explanation: Analogy in the mental work, reading and writing as a career.
  Usage: The main predicate; as predicate; refers to reading and writing as a career
  Source: Southern Liang Ren Fang "as recommended in Yangzhou Shi Xiao Table": "both the pen for the support, also commission the book into school."
No. 2
  发音 bǐ gēng yàn tián
  释义 比喻从事脑力劳动,以读写为业。