History: Then And Now, China

Over the last three millennia, many previously distinct ethnic groups in China have been Sinicized into a Han identity, which over time dramatically expanded the size of the Han population. However, these assimilations were usually incomplete, and vestiges of indigenous language and culture still often remain in various regions of China. Because of this, many within the Han identity have maintained distinct linguistic and cultural traditions while still identifying as Han.
Several ethnicities have also dramatically shaped Han culture, e.g. the Manchurian clothing called the qipao became the new "Chinese" fashion after the 17th century, replacing earlier Han styles of clothing such as the Hanfu. The modern term Chinese nation (Zhonghua Minzu) is now used to describe a notion of a Chinese nationality that transcends ethnic divisions.
• Languages
Most languages in China belong to the Sino-Tibetan language family, spoken by 29 ethnicities. There are also several major linguistic groups within the Chinese language itself. The most spoken varieties are Mandarin (spoken by over 70% of the population), Wu, Yue (Cantonese), Min, Xiang, Gan, and Hakka. Non-Sinitic languages spoken widely by ethnic minorities include Zhuang (Thai), Mongolian, Tibetan, Uyghur (Turkic), Hmong and Korean.