After the Cycle to Save People Failed

"Even if it's just once—" "Even if it's only once, I want to save you." ☆ As an undercover agent sent by the police to a criminal group, Bai Qianli successfully infiltrated the group under the pseudonym "Song Dongzhi" and maintained close contact with many members of the group. The superior who contacted her: ... You'd better not let them know that you have multiple ships. Bai Qianli said nothing and just sent information blindly. People who have met Bai Qianli say that she looks like a rigid top student who doesn't know how to adapt. They didn't expect her behavior to be so casual. It is precisely because of the strong contrast between her appearance and personality that she was able to gain a foothold in the criminal group. She was also able to put criminals who had placed their trust in her behind bars. While lurking, she met her ex-boyfriend who had been missing for many years. Then the past memories emerged in my mind. She had been trapped in a loop many years ago, returning to the day when her friend died in the line of duty. In the endless time loop, she tried her best to save the other party, but failed every time. For the last time, amid the explosion, he opened his mouth. ——"Thank you for all your hard work." ——He heard her say. Note: 1. The heroine has several dead Bai Yueguang, and the hero is close friends with them 2. More than one person likes the heroine, and several people live a good life together (thumbs up) 3. The heroine has many romantic relationships, including both good and bad people. Most of them are either gone or in jail. Purpose: I am willing to serve my country with this life.