《明史·列传·卷十八》
太祖了解到康茂才和陈友谅有故交，于是命令康茂才派老仆人持书信，欺哄陈友谅，表示愿做内应。
知茂才与友谅有旧，命遣仆持书，绐为内应。
Emperor Taizu learned that Kang Maicai and Chen Youliang were old friends, so he ordered Kang Maicai to send an old servant with a letter to deceive Chen Youliang, expressing his willingness to serve as an informant.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 太祖了解到康茂才和陈友谅有故交，于是命令康茂才派老仆人持书信，欺哄陈友谅，表示愿做内应。 [/INST] 知茂才与友谅有旧，命遣仆持书，绐为内应。</s>
Convert the following modern Chinese text into Classical Chinese: 太祖了解到康茂才和陈友谅有故交，于是命令康茂才派老仆人持书信，欺哄陈友谅，表示愿做内应。
user
知茂才与友谅有旧，命遣仆持书，绐为内应。
assistant