One possible theme could be mystery. The existence of the secret chambers implies there are things to be discovered. Another theme might be power. If the saintess has access to these chambers, it could be related to her power or a source of power. Also, there could be a theme of faith, considering the role of a saintess, which is often associated with religious or spiritual beliefs.
I'm sorry, I haven't actually read this novel specifically. But generally, a novel with such a title might involve a story centered around a saintess and some sort of mystery or secrets associated with chambers. It could potentially be a fantasy or historical - themed story where the saintess has a special role and the secret chambers hold key elements to the plot, like hidden treasures, ancient knowledge, or maybe something related to her powers.
I don't know the main characters as I haven't read the novel. But it's likely that the saintess herself is a main character. There might also be other characters like priests or people from the religious community she belongs to, or perhaps a character who discovers her secret night activities.
I'm not sure specifically as I haven't read this novel. It might be about a saintess and some events that occur during the night. Maybe it involves her secret tasks, relationships, or spiritual experiences that are unique to the night time in the context of the story.
Another theme could be trust. Since there is a secret involved, it's likely that the concept of trust among the characters is explored. For instance, if a character discovers another's secret, it could break the trust between them. Or perhaps the story shows how difficult it is to trust someone when you suspect they are hiding something. And also, the theme of discovery could be there. As the story unfolds, the discovery of the secret could be a major plot point, leading to changes in the characters' lives and relationships.
Love is also a significant theme. The protagonist often has to balance his love life with his dangerous job in the secret service. There are complex relationships that add depth to the story.
One possible theme could be displacement. If'send her back' is literal, it might be about a character being displaced from a place she's currently in. Another theme could be female identity. Since it mentions 'her', it might explore how a female character's identity is affected by being sent back. Also, power dynamics could be a theme, as the act of sending someone back often involves someone in a position of power making that decision.
There could be themes of self - discovery in'my secret stories'. Maybe the stories are about someone exploring their true self in secret, away from the prying eyes of society. Also, friendship themes might be present, such as a secret pact between friends that no one else knows about. It could be that these friends supported each other through tough times without anyone else being aware. This shows the depth and secrecy of their bond.
I don't know for sure as I haven't read the novel, but surely the fake saintess is one of the main characters. There might also be those who believe she is the real saintess, like some religious leaders or followers.
According to the given novel information, the following novelists were good at writing mechanisms, secret codes, and secret rooms: Black Horse River, Mo Jiu's keen mechanism thinking in "The Lonely King and Widow Daughter"; The Firefly Between the Feet, the dense puzzle-solving plot in "The Secret Room Can't Escape";; The rumor of the young master, the weaving and inheritance of the mechanism network in "Jinling Machine Master", etc. The above is my personal recommendation. I sincerely hope you like it ~
The themes could be family, kindness, and discovery. Her stories often feature families, either human or animal, and how they support each other. Kindness is also a big part, where characters show compassion to others. And discovery, as the young protagonists discover new places or abilities, which helps them grow as individuals.