From Train to Busan to the Redemption of the Three Realms

My name is Chen Xu, a former criminal investigation profiler. My sister Chen Yue disappeared mysteriously three years ago, leaving only a rusty bronze badge at the scene. Today, I finally found her - on the KTX train to hell in Busan. On the car window, she wrote in blood: Brother, leave quickly, they are not zombies... ... Is cognition. The next second, the "zombie" hanging upside down from the ceiling at the end of the carriage slowly and synchronously turned back to me. The corners of its mouth were forming a sister's smile that I was very familiar with. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.