《太平广记·卷二十五·神仙二十五》
有一个九十多岁的人说： 我祖父往年因为采药，不知哪儿去了，到现在九十年了。 
有一人年九十余，云： 吾祖父往年因采药，不知所之，至今九十年矣。 
A man over 90 years old said: My grandfather went out to gather herbs many years ago, and never returned. This has been going on for ninety years.
<s>[INST] Rewrite the following English passage in the style of Classical Chinese: A man over 90 years old said: My grandfather went out to gather herbs many years ago, and never returned. This has been going on for ninety years. [/INST] 有一人年九十余，云： 吾祖父往年因采药，不知所之，至今九十年矣。 </s>
Rewrite the following English passage in the style of Classical Chinese: A man over 90 years old said: My grandfather went out to gather herbs many years ago, and never returned. This has been going on for ninety years.
user
有一人年九十余，云： 吾祖父往年因采药，不知所之，至今九十年矣。
assistant