The difficulty of logistics and the malarial climate in the south made Han migration and eventual sinification of the Yue a slow process .
Throughout the Qin - Han period , large waves of Han Chinese immigrants from the northern and central plains slowly penetrated southern China .
The difficulty of logistics and the malarial climate in the south made Qin - Han migration and eventual sinification of the Yue a slow process .
Throughout the Qin - Han period , large waves of Han Chinese immigrants from the northern and central plains slowly penetrated southern China .