Since China announced the commercialization of 5G in 2019, significant progress has been made in 5G applications, transitioning from "0 to 1" and working towards a leap from "1 to N". 5G application scenarios, scale, standards, and solutions are all advancing further. Building upon 5G, 6G will contribute to a faster transition from the Internet of Things to the Internet of Everything, with an increasing variety and functionality of digital service terminals for humans. Currently, 6G mobile communication is in its early stages, poised to bring disruptive changes to both theory and application.