Industry Interpretation: Why is the "Poor Man's Big Brother" gradually declining?

The term "Little Smart" (Xiaoling Tong) truly caught people's attention due to the renowned science fiction writer Ye Yonglie's book *Little Smart Travels Through the Future*. In the book, many scientific concepts were explained through the experiences of Little Smart as a young reporter. In the memories of people in their forties and fifties, Little Smart left a certain impression.

As a means of communication, Little Smart is not a Chinese invention. In Japan, it is called cordless telephone, abbreviated as PHS (Personal Handy-phone System). It uses microcell technology to wirelessly connect the user end (i.e., the portable phone handset) to the local telephone network, allowing traditional fixed-line telephones to become mobile so that users can make and receive calls while on the move. However, its fatal weakness is...