4D Cinema Introduction: Heilongjiang Provincial Science and Technology Museum 4D Cinema is currently the most advanced three-dimensional special effects cinema in China, with a 180-degree circular screen, 5.1-channel digital audio, and six projectors (digital projectors) for simultaneous projection . When watching a movie, you wear polarized glasses, and through the coordination of the control system, it runs synchronously with the movie to complete special effects such as seat vibration, falling, wind spray, water spray, and slap, creating an immersive feeling.