Trafic d'or sous les T'ang

The setting feels so authentic and immersive, but I wonder how much research went into capturing the culture and period accurately. Did he aim for historical accuracy over storytelling or vice versa?

The cultural nuances added depth to the mystery, but I was curious whether these portrayals were based on extensive research or creative interpretation. How authentic do readers feel these cultural elements are?

The clues are so intricately woven, and I loved trying to piece everything together. I'm curious whether the author planned the puzzle from the start or let it evolve as he wrote.