Maidservants are the most insignificant people in the imperial palace.
Like pawns, they can only move forward, never backward. Maidservants are no different.
But who says a maidservant can't be the last one standing?
P.S. 1. The heroine's relationship is ambiguous, and neither of them will make it explicit.
2. The hero is a real eunuch. They scheme against each other and support each other.
Theme: Even a tiny moss flower can bloom like a peony.