Being a Eunuch by Mistake for Thirty Years: the Punishment for Stealing Peaches

Taishang Laojun's alchemy boy Mingyue was demoted to earth for stealing the immortal peach. He had to go through eight hardships in the world before he could become enlightened and ascend to immortality again. Unexpectedly, he had a terrible fate. In his first reincarnation, he was accidentally castrated by his senior brother Qingfeng, and he could only travel back to the Ming Dynasty to become a eunuch. How should Mingyue play this sudden identity of eunuch?