If you look into the history of China, it all starts with expansion. The first Han Chinese dynasty was founded through conquering and expanding, and for over 3,000 years, would continue to expand, conquer, displace or assimilate native populations in Southern parts of China, to Tibet and Uyghur regions.
In the history of the Cantonese, Hakka, Teocheow and so, their history begins with “Northern Han Chinese” moving into the native Southern Chinese. The paternal linage from Northern Han Chinese and the maternal linage of Southern ethnic Chinese.
In the history of Vietnam, the country has been colonized and conquered four times, resulting the loss of their ethnic culture, and adopting to Chinese culture.
In the history of the Hmong, they were constantly displaced because of Chinese expansionism and conquering to assimilate the Hmong into Chinese culture, known as the “Cooked & Raw” campaigns.
Mandarin has always been a northern Han Chinese language, but due to expansion, southern provinces, such as Hunan, Sichuan and Yunnan have adopted to speaking Mandarin, a Northern Han Chinese Language.
This has resulted in hundreds of lost and extinct native cultures and ethnicities in Southern China.
In the past decade, Tibetans and the Uyghur are resisting the Sinocization, with the Chinese government forcing their culture and language among the ethnic population, by the erasure of their culture, like opening Chinese business in non-Chinese speaking Tibetan cities and banning Uyghur from their Islamic practices, and to adopt a more “Chinese” identity.
To “unify” China, the government has already “Mandarinized” the provinces of Shanghai and displaced the local and native language of Wu with Mandarin, that children no longer speak their native languages to their parents. When Hong Kong attempted to make Cantonese an official language, the Chinese government refused to acknowledge it, declaring Cantonese as a “dialect”.
And now with this Mandarin-Only law passing in September 1st, 2014, will only further purge the identity, language and culture of the Southern Chinese.