《笑林广记·贪吝部》
医生说： 人参如果不用，必须用熟地代替，其价钱很贱。 
医生曰： 参既不用，须以熟地代之，其价颇贱。 
The doctor said, "If no ginseng is used, it must be replaced with Chinese foxglove, which is very cheap."
<s>[INST] Convert the following English text into Classical Chinese: The doctor said, "If no ginseng is used, it must be replaced with Chinese foxglove, which is very cheap." [/INST] 医生曰： 参既不用，须以熟地代之，其价颇贱。 </s>
Convert the following English text into Classical Chinese: The doctor said, "If no ginseng is used, it must be replaced with Chinese foxglove, which is very cheap."
user
医生曰： 参既不用，须以熟地代之，其价颇贱。
assistant