This time, the antiquarian Archon Duval and his nephews go to China in search of a young laboratory assistant who has disappeared to God knows where. After all, along with him, documents about the elixir of immortality, associated with the times of Emperor Qin himself, also disappeared. What if the papers fell into the wrong hands? What if the professor's assistant is in danger? You will learn a lot about the terracotta army of Emperor Qin and walk along the corridors lined with clay warriors. Will the secrets they still keep help them find their loss? Based on historical events and facts.