I've heard of the han-chinese migrating from central plain of China towards southern China during Age of Fragmentation, Tang dynasty, Song dynasty etc.
During age of fragmentation, because of invasion from northern nomads who later settled in Northern China, many han-chinese had to flee their homes in central plain of China and moved towards the South. Many settled in Fujian and Guangdong province. Some would probably have inter-mixed with the local indigenous tribes (such as 100 Yue/Min), but most would probably end up being today's Fujianese or Cantonese. In fact, the Hokkien or Holo or cantonese was said to be very similar to Middle Chinese, that differ alot from today's Modern chinese. This could probably reason that the Fujianese or Cantonese's ancesters could be traced back to Central plain China. Holo people's ancestors could also be traced back to Heluo (Luo River in Henan region).
Although there continues to have debate whether the southern chinese were 'more originally han' than northern chinese, certainly there was no doubt that part of southern chinese's root can be traced to central China.
My surname "Zhuo 卓" originated from Chu kingdom during Warring States Period, but I personally am unawared of my ancestry. I'm a Taiwanese with ancestry traced from Fujian province. But whether I was a "Min" sinificized/intermarried with Han, or was originally han-chinese migrating from Central China towards the south, I cannot be sure, as that migration history probably took place 1500 years ago. I also did not have genealogy records, so it was hard for me to trace my ancestry history.
Can someone tell me more about this migration history? Does anyone have exact statistic figure for the number of people migrated in chinese history?

