Talk:Zigong dialect

This page needs citations. For example, the page says "Modern Zigong dialect was formed rather recently in a great wave of immigration after the Qing Dynasty."

But the Chinese version says "自贡话的源头，是600多年前的明代雅言南京话" ('Zigong dialect is based on the Ming Dynasty court-standard Nanjing dialect of about 600 years ago').

What does the English sentence above mean by "modern Zigong dialect"?

Thanks!

-Amenomori1668