in the Provincial Department yesterday The audience is watching the sword tooth Dynasty. The film is the first four-dimensional film developed by China's first popular science industry. The film, 6 million years ago in Gansu and the political area as the background, with our country's unique palaeo bus sword tigers as the protagonist, vividly deduces and vividly reproduces a story about the paleontological groups in the Midwest of China. The 4D movie is the introduction of special effects such as vibration, blow, spray, smoke and so on into 3D movies. Reporter Liu Chang's photographic report