Why do southerners have a stronger concept of clan identity than northerners?

The concept of family and clan identity of southerners is indeed much stronger than that of northerners, mainly because northerners have experienced too many historical migrations in the past historical development process, so they don't pay much attention to surnames and clans, while southerners are different. They have always had a very long historical tradition, so they naturally have a very long clan history.

Perhaps you will find that there are many ancestral halls in the south, which are basically not seen in the north, because ancestral halls are also a manifestation of family clan identity. Due to the frequent struggles and migrations in the past history, their clan concept is naturally not particularly strong, and they don't have much sense of belonging to surnames, which is also the reason for their weak concept.

Of course, if two people with the same surname meet in the south, there may be a good conversation, mainly because the clan concept in the south is really strong, because the south is relatively stable in the past historical development process, so basically the communication between clans is also very close, which leads to the continuous inheritance and development of clan culture, and thus many ancestral temples will be built to commemorate it, which also leads to a great deviation in the concept of clan identity between the north and the south.

So generally speaking, the popular concept of clan identity in the south is not very common in the north, which is mainly related to the development of past history and the frequent migration and integration in the north. Therefore, knowing more about these histories in peacetime can help us have a clearer understanding.