Here are some recommendations for novels similar to Princess Xixi's Escape: Book of Troubled Times, Spirit Walker, Tang's Table, King of Familiar, and Fairy, Please Listen to My Explanation. These novels might be similar to the Princess's Escape that you are looking for.
The setting also plays a big role in such a fanfic. If the story is set in a time when Root is under more scrutiny from the village leaders, it might be easier for the OC to escape. For instance, if there are political tensions and Root is trying to keep a low profile, the OC could take advantage of the chaos. Also, the OC's knowledge of the Root's hideouts and routines would be essential for a successful escape. They might have memorized the patrol schedules or known the secret passages within the Root's base.
"A hundred miles ()()" was a common idiom. There were many words that could be filled in the parenthesis, such as the one in a hundred, the talent in a hundred, the different styles in a hundred miles, and the different customs in a thousand miles.
While waiting for the TV series, he could also click on the link below to read the classic original work of "The Legend of Mortal Cultivation"!
Another theme could be self - discovery. As they come closer and share a kiss, they might also discover new things about themselves in the process. For example, in some fanfictions, a Miles might realize he is more capable of loving deeply than he thought.
Well, it could be about Bella trying to break free from her family in the context of the Twilight universe. Maybe she's feeling restricted or wants to pursue her own path away from the family dynamic that exists in the original story.
Well, in some fanfics, Naruto might use his shadow clones to create a distraction and then slip away. Maybe he's on a mission he deems more important than staying in the hospital.
Maybe it was another slave who had more knowledge of the surroundings and could guide her. Or it could be a sympathetic outsider, like a person who opposed slavery on moral grounds and provided her with food and shelter during the escape.
In such a story, perhaps the key event could be the girl's initial decision to escape, which is often driven by unbearable living conditions. Another important event might be her finding a safe hiding place during the escape journey, and finally reaching a place of freedom or a group that can protect her.