➀ Sensors play a crucial role in modern society across various fields such as scientific research, industrial production, national defense, and healthcare; ➁ High-end sensors are considered a 'card up the neck' technology due to their high precision and dependence on new principles, materials, and devices; ➂ The application of sensors ranges widely, from smartphones to medical instruments, and they are vital for the development of new technologies and industries; ➃ China's high-end sensor industry faces challenges such as reliance on imports and gaps in innovation and technology.