- **First Encounter with the Prophecy**: Outside the securities sales department in the dead of winter, Chen Ye encountered a mysterious lame old man. The old man wrote the Fibonacci sequence in the snow with charcoal, predicting that a breakthrough of the 3-day moving average would bring disaster.
- **Life experience emerges**: Through the memories of stealing medicine on a snowy night, it is revealed that Chen Ye took risks in order to buy medicine for his seriously ill mother, as well as the origin of his knee scars.
- **Cultural relic clues**: The half piece of jade that the lame old man gave to Chen Ye echoes the other half in the New York Museum thirty years later.
- **Pursuit of Suspense**: The police raided the black market transaction scene, and the lame old man was targeted by plainclothes, implying that his identity was not simple.
