投筆 [－笔]

Jyutping tau4 bat1
Pinyin tóu bǐ

Definitions (Wiktionary)
  1. verb, figuratively, literary, of a writer
    to cease writing; to forsake the pen (for something else)
Examples (粵典–words.hk)
  1. Cantonese
    虽然屋企人都一致反对嘅决定，但佢都系不顾一切投笔从戎。
    雖然屋企人都一致反對嘅決定，但佢都係不顧一切投筆從戎。
    • He picked up the sword instead of pen regardless of the unanimous protest from his family.
Examples (Wiktionary)
  1. Mandarin
    投笔从戎
    投筆從戎
    tóu bǐ cóng róng
    • to cast aside the pen and join the army