The irony here is that uses for a decent "Computer Information System" in China would be fairly similar to the uses for one in any other country. I am guessing, then, that you might be helped by exploring the differences that China has from the rest of the world. Here I will focus on two areas of difference that are particular to China: population and politics. Further, I will talk about how a Computer Information System could be of benefit to both.
China is regularly hailed as a potential new superpower, with certain commentators citing its rapid economic progress, growing military might, very large population, and increasing international influence as signs that it will play a prominent global role in the 21st century.
First let's talk about the very large population of China and how a computer system could help in that regard. Keep in mind that China already has the "one couple, one child" rule and enforces it quite plainly. A computer system could keep constant monitoring of the births and deaths in China so that they can more adequately control (or at least record) their changing population. In regards to "daily activities" they might include hospital workers recording live births (as well as still births), incidences of twins, adoption services, etc. They also might include death certificates and internment activities due to death of a Chinese citizen.
Taking the issue of population even further, a good computer system could also help "feed" the people more appropriately by monitoring production of food by Chinese farmers as well as the distribution of that food to the population. In this way, there might be less poverty and more adequate supply for the incredibly large population of China. We can go even further by extending this idea of use of the computer beyond food and population control and delve into health and and housing and entertainment, etc.! The list of improvements would be endless!
Second, we should say a few words about the government of China and how a centralized computer system might help with communist activities. This part of the question makes me think heavily of a friend of mine, adopted from Vietnam, in pictures where the sound system that proclaimed government instructions was in full view. There was rarely a picture that did NOT contain one of these speakers. That was how the communist government in Vietnam maintained control and assured their citizens that they were doing the "right thing."
A computer information system in China would change the need for those speakers! In fact, each Chinese citizen could be linked to the system through their phones and/or have a continuous computer screen at home that would display information. This is a much more uniform system than the antiquated use of sound waves and will assure understanding of the population (where, beforehand, some could claim not to have "heard" instructions). Even the elderly, in this regard, could then be given means to hear or see the correct instructions.
Finally, this computer information system would allow the government of China to maintain communist control of their citizens easier. (And in this regard, the whole idea makes me cringe.) With a computer information system, the government could actually create ways of "checking up" on each individual citizen. Managers all over the country (or even in one central place) could be in charge of seeing which buttons are pressed and determining which citizens are in compliance.
As was seen with the passage of laws in America such as The Patriot Act, a centralized computer system can certainly give governments more control. It freaked much of the population out in our country. I am not so sure it would have the same effect in China even though it has the same potential.