A Eunuch, but Bound to the System of Many Children and Many Blessings

Wei Dabao, while enjoying the benefits of freelancing, was hit by a truck in the feudal dynasty, and his soul was transported into the body of a young eunuch who had just died of pain due to purification. It was so unfair. Others who traveled through time were all princes and nobles. Why was he a real eunuch? Dog system or many children and many blessings system, how to play this?