The verse — “With flowers and wine, spring ever stays; Without lamp or candle, night self-illumines” — originates from Strange Tales from a Chinese Studio: The Examination for the Post of City God (Kao Cheng Huang or Candidate for the City God).
In “The Examination for the Post of City God” from Strange Tales from Liaozhai Studio, why would Song Tao go to Changshan to inquire about Scholar Zhang?