Traveling through an ancient military camp: Bao'er's survival song

An ensemble piece. No cheat codes. Logically sound. The transmigrated female protagonist is timid and cautious. The initial chapters need to establish her identity and background; please bear with it. Modern professional woman Li Bao'er transmigrates into the body of a sixteen-year-old soldier disguised as a boy. She doesn't want to change the world or fall in love; she just wants to return to the modern world as quickly as possible. Ancient generals constantly find ways to kill Li Bao'er, but she keeps being reborn back in ancient times. Why? The story mainly revolves around two couples: Li Bao'er, who transmigrates between the past and present, and Liu Shu, whose bloodline is confused, both share the commonality of identity confusion. Li Bao'er is timid and cautious, while Liu Shu is pure-hearted and steadfast. Peng Zizheng and Wu Suining both have noble ancient backgrounds...