Abduction and domination + a tangled rivalry + male competition + imprisonment + a long road to winning her back
Yu Xianyou transmigrates into a book.
The System tells her that, because the original heroine has a special constitution, she is successively imprisoned and claimed by the Demon Lord, ensnared in the Regent's vast web, and watched like prey by the Demon Emperor...
Yu Xianyou interrupts: “Excuse me, who are you...?”
The System says smugly, “I’m your palace intrigue System.”
Yu Xianyou is on the verge of tears. “What use is a palace intrigue System in a world of immortal cultivation?!”