The term "attendant" might sound like a servant, but in reality, it means a combination of a guard and a follower.
If Guo Feilong could become Luo Li'er's attendant, it would be akin to becoming a member of the Fuxi Immortal Cultivation World's Temple.
He would receive cultivation resources from the Fuxi Immortal Cultivation World's Temple. Of course, all of this is based on them helping Luo Li'er obtain cultivation resources, which she would then distribute to her attendants.
The Fuxi Immortal Cultivation World allows each core disciple to have three attendants and followers, ensuring that each core disciple has their own loyal confidants who can sacrifice themselves at critical moments to save the core disciple.