In China, many students regard university as the first step into society. Actually, it's true. Universities are not as simple as primary and secondary schools. Many things can't be decided by impulse. In college, suing teachers can't solve everything. University is a small social circle. Here, you should learn to be responsible for yourself and bear the corresponding consequences for every decision you make. Therefore, you decided to stay in your hometown.
In fact, when it comes to eating habits, there is not much difference between the eating habits of the north and the south. For example, we northerners prefer to eat pasta, and a bag of flour can make a large table of attractive classic pasta, while southerners prefer to eat rice. In addition, the dishes in the south are generally fine, not as big and rough as those in the north. The dishes in the south are really exquisite. So it is normal for northerners not to adapt at first. If you think you are a southerner and get used to it, you will feel that southern food is really advantageous. Also, if you drink alcohol, it will probably not be very generous in the south, and don't expect your classmates from the south to accompany you to get drunk, because the amount of alcohol in the south is really lower than that in the north.
From this point of view, there are still many differences, but these are caused by uncontrollable factors such as regional climate, and you can only adapt. If you really can't adapt, maybe you can try some local northern restaurants.