《淮南子·地形训》
天是一为阳，地是二为阴，人生于天地，是为三，三三得九，九九八十一。
天一地二人三，三三而九，九九八十一。
The heaven is yang, the earth is yin, and a person is born from heaven and earth and is three, three multiplied by three is nine, and nine multiplied by nine is eighty-one.
<s>[INST] Rewrite the following English passage in the style of Classical Chinese: The heaven is yang, the earth is yin, and a person is born from heaven and earth and is three, three multiplied by three is nine, and nine multiplied by nine is eighty-one. [/INST] 天一地二人三，三三而九，九九八十一。</s>
Rewrite the following English passage in the style of Classical Chinese: The heaven is yang, the earth is yin, and a person is born from heaven and earth and is three, three multiplied by three is nine, and nine multiplied by nine is eighty-one.
user
天一地二人三，三三而九，九九八十一。
assistant