Answer the following question: Facts: - zi: ziyuan -lrb- -rrb- - title: regent - pinyin: sun jun - kingdom: eastern wu - death date: 256 -lrb- aged 37 -rrb- - simp: - trad: - birth date: 219 - name: sun jun - wg: sun chun Based on these bullet points, write a short biography describing the life of sun jun -lrb- three kingdoms -rrb- .
Answer:
sun jun -lrb- 219 -- 256 -rrb- , courtesy name ziyuan , was a regent of the state of eastern wu during the three kingdoms period .he served under the second wu emperor sun liang .