Bùrù zhīmìngzhīnián hòu, tā fàngxià le mínglì, kāishǐ zhuānxīn xiězuò.
After turning fifty, he let go of fame and gain and began to write in earnest.
Tips
history
From 《论语·为政》: 五十而知天命 "at fifty I knew the will of Heaven". It belongs to a set of Confucian names for ages: 而立之年 30, 不惑之年 40, 知命之年 50, 耳顺之年 60. Used in biographies, speeches and formal writing.