Okay, according to the information you provided, I found a novel called " The Mysterious Ruby Ring of Time Travel ". It tells the story of a modern girl who transmigrated to a fantasy world and obtained a ruby ring. She then met the male protagonist and what happened during their adventure. This novel is not bad. You can read it.
You can use 'ring ring ring ring' as a signal for something exciting in the story. For example, in a story about a wizard's apprentice, the 'ring ring ring ring' could be the sound of a magical alarm that warns of a dragon approaching.
One bedtime story could be about a magical bell that goes 'ring ring ring ring'. The bell is in an enchanted forest and every time it rings, it wakes up the little fairies who then start their day of spreading magic and kindness in the forest.
There could be a story where a boy hears a mysterious 'ring ring ring ringtone' coming from an old attic. When he follows the sound, he discovers a time - traveling device that was set off by the ringtone. He then travels back in time and has an adventure in a bygone era, and at the end, it becomes his bedtime story to remember.
It could be a unique sound associated with bedtime stories, perhaps used to signal the start or end of a story. For example, it might be a special ringtone in an app that reads bedtime stories to kids.
Ring ring bedtime stories could be a collection of bedtime stories. Maybe they are stories that start with the sound of a ring, like a doorbell or a phone ring, which adds an interesting element to the tales.
Ruby could be anyone. It might be a name given to a character in a specific story or just a name of a person in real life who likes to read stories in her own time.
Once upon a time, there was a girl named Lily. She had a new phone with a unique 'ring ring ring ringtone'. One night, as she was lying in bed, the ringtone started to play on its own. Lily was a bit scared at first, but then she saw a soft glow coming from her phone. Out of the phone screen came a little elf. The elf said that the ringtone was a call from the Dreamland. The elf took Lily on a journey through Dreamland, showing her all the wonderful things like flying horses and castles in the clouds. When the journey ended, Lily was so tired that she fell asleep with a smile on her face.