CompletedYu Zizhen, who calmly sacrificed herself to save someone, transmigrated into a book.
System: Beep—Time and Space Administration's "Cannon Fodder Self-Salvation System" Unit 10008 is at your service. Welcome to the world within the book.
Yu Zizhen looked bewildered: Didn't she die?
System: Your mission this time is...
Mission? Yu Zizhen immediately perked up. This, she knew how to do!
Days later, Yu Zizhen called the system and presented a "Cannon Fodder Self-Salvation Plan" thicker than a city wall.
The system, constantly disturbed and desperately wishing for peace, was beyond desperate: "Family, who understands? While a host who can't be moved makes the system go bald, a host who overworks herself is truly draining the system's life!"