Zhang revealed that The schedule for Beijing to build a world-class smart city has been laid out, starting with a pilot project in Beijing's sub-center. Smart cities will have many conveniences, such as the adoption of new technologies such as big data and the Internet of things, as well as smart...

For a long time, a major pain point for mechanical keyboard users has been that the traditional mechanical keyboard is too heavy, resulting in a variety of discomfort in actual use, and even very inconvenient when taking out. Players are increasingly demanding for a thin mechanical keyboard.