《三国志·吴书·吴主五子传》
孙登被立为太子共二十一年，三十三岁去世。
立凡二十一年，年三十三卒。
Sun Deng was made the crown prince for 21 years, and died at the age of 33.
<s>[INST] Render the following Classical Chinese text into fluent English: 立凡二十一年，年三十三卒。 [/INST] Sun Deng was made the crown prince for 21 years, and died at the age of 33.</s>
Render the following Classical Chinese text into fluent English: 立凡二十一年，年三十三卒。
user
Sun Deng was made the crown prince for 21 years, and died at the age of 33.
assistant