What can mobile internet do for us? ——Web browsing, news information, taking photos, search queries, microblogging, music, online videos, online games, community networking, instant messaging, wireless transmission storage, positioning map navigation, mobile payment, email... In short, connecting mobile to the Internet is really powerful and can do anything! However, the efficiency of terminal access and the state of being on the move determine that we cannot use mobile Internet for a long time. When do we need mobile Internet? Most of the demand comes from the time away from the computer (this does not mean that being away from the computer necessarily requires mobile Internet), and the rigid demand for mobile Internet lies precisely here. Now we find that when other media cannot meet the demand, mobile Internet has become a choice for people to pass their leisure time. Of course, we cannot pray for the death of TV and PC Internet because mobile Internet cannot survive without other wired network media. The amplification of mourning day phenomenon reflects people's desire to seek entertainment through mobile Internet. Not all major events affect mobile Internet? The World Cup is a big event. During the live broadcast of the World Cup matches, the access volume of the Internet collectively plummeted. This is because the Internet cannot meet users' needs to watch the game. Or it cannot meet the need to watch the game comfortably. Watching on TV is more exciting. It can be said that the PV of mobile Internet at this time is even pitifully small. However, during the morning and evening rush hours for work, the demand to check information related to the World Cup through mobile Internet begins to increase, and people use this time to pay attention to these news updates. Another example is the day of the Tieba Holy War. Our service PV did not increase but slightly decreased. One could say this was expected. Imagine, with a holy war coming, who would use "low-end weapons"? We cannot force people to use mobile Internet. We must focus on satisfying users' needs while they are on the move and allow them to choose the most suitable service terminal at the appropriate time and place. Mobile Internet services are constrained by the following conditions: 1. For people, time is an issue. The time available to use mobile Internet can be described as fragmented time. Therefore, mobile applications are restricted by time and cannot accomplish overly redundant tasks; otherwise, people will choose the more reliable PC terminal. At the same time, the program needs to timely save user data because the length of leisure time varies, and the possibility of users pausing the program is quite high. 2. For terminals, performance is a tight constraint. From iPhone to iPhone 4.0, from G1 to G7, the performance of terminals has been improving, giving applications more room to maneuver, with screen resolution and memory getting larger and larger. But ultimately, it is still a mobile terminal, and its performance cannot replace that of a PC, so the services on it need to be simpler and more targeted rather than comprehensive. Don't even mention the terminal performance of Symbian phones, where application development is even more restricted. The surge in traffic on mourning day is a good thing, making us see more clearly the position of mobile Internet. Choosing to do mobile Internet means finding our own position. Finally, I will end with a quote from Kai-Fu Lee's speech: "We need to focus. Regarding the ten applications ordinary users need, concentrate our innovation within these ten applications to pave the way for future visions. We like the vision, but after being inspired by it, we should stop doing it. These things cannot be done in one or two years, so let's first do what we can."