- **A Prophetic Encounter**: In the depths of winter, outside a securities brokerage, Chen Ye meets a mysterious elderly man with a limp. The old man uses a charcoal pencil to write the Fibonacci sequence in the snow, predicting disaster when the three-day moving average breaks through.
- **The Past Comes to Light**: Memories of sneaking out to steal medicine on a snowy night reveal how Chen Ye once risked everything to buy medicine for his seriously ill mother, as well as the story behind the scar on his knee.
- **A Clue in an Artifact**: The half-jade pendant the limping old man gives Chen Ye forms a connection across time with the other half, which will be in a New York museum thirty years later.
- **A Mysterious Pursuit**: Police raid an underground trading site, and plainclothes officers set their sights on the limping old man, hinting that his identity is far from ordinary.
