Sun Xiaomeng is a good man, and Sun Xiaomeng and Zhao Binbin are childhood friends. It can be said that Sun Xiaomeng was the only savior of Zhao Binbin, but Sun Xiaomeng was often bullied by others, which is why Zhao Binbin later killed so many people. So many people killed by Zhao Binbin are related to Sun Xiaomeng, but Sun Xiaomeng is a gentle and honest woman.
For Zhao Binbin, Sun Xiaomeng was the only reason why he was killed, but in Sun Xiaomeng's heart, she regarded Zhao Binbin as her family. Zhao Binbin's killing spree was also because he wanted to save Sun Xiaomeng's death. Sun Xiaomeng is very important to Zhao Binbin, and Sun Xiaomeng supports Zhao Binbin's belief of going back to the past again and again.
Zhao Binbin and Zhang Haifeng are the same. Once they die, they will go back once, so that's why Zhao Binbin killed people. But the people he killed were not good people. They all hurt Sun Xiaomeng, and Zhao Binbin's family seems to have something to do with them.
Once, after killing a man in Zhao Binbin, Sun Xiaomeng's boyfriend Liu Yuqi happened to see it. Zhao Binbin had told Sun Xiaomeng about it, but Liu Yuqi covered it up. Liu Yuqi told Sun Xiaomeng that he didn't see the real murderer. Sun Xiaomeng told the police that he didn't know Zhao Binbin, but on the other hand, he secretly helped Zhao Binbin clear his bad blood.