Finally, after observing the murder case and analyzing the strange reaction of neighbors and the complicated relationship between people around them, the truth gradually surfaced: it turned out that this murder case was carefully designed by my cousin with the intention of framing others to protect themselves in order to achieve ulterior motives. Lan Suxin was moved by his kindness and tolerance, because through careful observation and analysis, she judged that she was not the murderer mentioned by the outside world and later became her girlfriend.