They left the palace and returned to the society. Here is a book about their life after. The Last Eunuch of China: The Life of Sun Yaoting: Jia Yinghua, Sun Haichen: 9787508514079: Amazon.com: Books. read more
They were called 寺人. There are quite a few famous one. E.g 寺人披 who was assigned to assassin 晋文公 but later on employed by him. read more
All humans have a purpose in life, and it is their duty to follow it. It is also their duty to contribute to and improve life here on Earth. read more