In a literary duel, Lin Yuan is inclined to write about those works that he feels most confident. He sees high chances of winning with both the Hercule Poirot series and the Sherlock Holmes series, hence the indecisiveness between the two most legendary detectives in the history of crime fiction—
"Let's go with Poirot."
Lin Yuan finally made a decision.
The reason he declined to use Sherlock Holmes was simple.
Because the origin of Narrative Trickery is "The Murder of Roger Ackroyd". Poirot was the detective unraveling this case, and it was from this novel that Leng Guang had become the pioneer of anti-unreliable narrators; therefore it seemed most fitting to let Poirot win this literary duel.
What began with Poirot should also end with Poirot.
It adds a sense of ceremonial completion.
If he were to use Sherlock Holmes instead, it would seem as if Sherlock was stepping in just to clean up Poirot's mess.
