In an exhibition hall of the National Museum of Classic Books, located within Beijing's National Library of China, real-time puzzle game players use guidebooks while checking passages in ancient classic books, and searching for clues to solve the game.

Feng Wanwen, a player of the immersive, interactive puzzle-solving game Ancient Book Restorer — Hundred Cities Book, scanned a QR code on the guidebook to receive missions to find the hidden "truth" on the game's WeChat mini-program. The game is won by completing puzzles with clues hidden in exhibits, such as oracle bones, bamboo and wooden slips, stone inscriptions and rare ancient books.