 Complete the following phrase:  Different waves of migration of aristocratic Chinese from northern China to the south at different times  with some arriving in the 300s400s and others in the 800s900s  resulted in the formation of distinct lineages. During the 700s Tang dynasty, Han migrants from northern China flooded into the south. Hong Kong history books record migrations of the Song and Tang dynasties to the south, which resulted in Hong Kongers that are descended from ethnic Han settlers that originated from northern China. Since it was during the Tang dynasty that Guangdong was subjected to settlement by Han people, many Cantonese, Hokkien and Teochew call themselves Tang. Several wars in northern China such as the Uprising of the Five Barbarians, An Lushan Rebellion, Huang Chao Rebellion, the wars of the Five Dynasties and Ten Kingdoms and 