Teacher makes riddle-like mechanical book

Gao Fei shows his handmade wooden and mechanical book based on the King of the Undersea City in Lanzhou City, the capital of Northwest China’s Gansu Province, Feb. 24, 2017. A teacher at a foreign language school, Gao created a maze and gears with wood and metal, hiding the clues needed to turn a page in the story, provoking reader interest to explore. The book has five pages. [Photo: China News Service/Yang Yanmin]

Gao Fei shows his handmade wooden and mechanical book based on the King of the Undersea City in Lanzhou City, the capital of Northwest China’s Gansu Province, Feb. 24, 2017. A teacher at a foreign language school, Gao created a maze and gears with wood and metal, hiding the clues needed to turn a page in the story, provoking reader interest to explore. The book has five pages. [Photo: China News Service/Yang Yanmin]

Gao Fei shows his handmade wooden and mechanical book based on the King of the Undersea City in Lanzhou City, the capital of Northwest China’s Gansu Province, Feb. 24, 2017. A teacher at a foreign language school, Gao created a maze and gears with wood and metal, hiding the clues needed to turn a page in the story, provoking reader interest to explore. The book has five pages. [Photo: China News Service/Yang Yanmin]

Gao Fei shows his handmade wooden and mechanical book based on the King of the Undersea City in Lanzhou City, the capital of Northwest China’s Gansu Province, Feb. 24, 2017. A teacher at a foreign language school, Gao created a maze and gears with wood and metal, hiding the clues needed to turn a page in the story, provoking reader interest to explore. The book has five pages. [Photo: China News Service/Yang Yanmin]