Hmong–Mien languages in the context of "Miao people"

Scholars have attempted to reconstruct the phonology of Old Chinese from documentary evidence. Although the writing system does not describe sounds directly, shared phonetic components of the most ancient Chinese characters are believed to link words that were pronounced similarly at that time. The oldest surviving Chinese verse, in the Classic of Poetry (Shijing), shows which words rhymed in that period. Scholars have compared these bodies of contemporary evidence with the much later Middle Chinese reading pronunciations listed in the Qieyun rhyme dictionary published in 601 AD, though this falls short of a phonemic analysis. Supplementary evidence has been drawn from cognates in other Sino-Tibetan languages and in Min Chinese, which split off before the Middle Chinese period, Chinese transcriptions of foreign names, and early borrowings from and by neighbouring languages such as Hmong–Mien, Kra-Dai, Vietic and Tocharian languages.

Although many details are disputed, most recent reconstructions agree on the basic structure. It is generally agreed that Old Chinese differed from Middle Chinese in lacking retroflex and palatal obstruents but having initial consonant clusters of some sort, and in having voiceless sonorants. Most recent reconstructions also posit consonant clusters at the end of the syllable, developing into tone distinctions in Middle Chinese.

A paddy field (or paddy) is a flooded field of arable land used for growing semiaquatic crops, most notably rice and taro. It originates from the Neolithic rice-farming cultures of the Yangtze River basin in southern China, associated with pre-Austronesian and Hmong-Mien cultures. It was spread in prehistoric times by the expansion of Austronesian peoples to Island Southeast Asia, Madagascar, Melanesia, Micronesia, and Polynesia. The technology was acquired by other cultures in mainland Asia for rice farming, spreading to East Asia, Mainland Southeast Asia, and South Asia.

Fields can be built into steep hillsides as terraces or adjacent to depressed or steeply sloped features such as rivers or marshes. They require a great deal of labor and materials to create and need large quantities of water for irrigation. Oxen and water buffalo, adapted for life in wetlands, are important working animals used extensively in paddy field farming.

Sino-Xenic vocabularies are large-scale and systematic borrowings of the Chinese lexicon into the Japanese, Korean and Vietnamese languages, none of which are genetically related to Chinese. The resulting Sino-Japanese, Sino-Korean and Sino-Vietnamese vocabularies now make up a large part of the lexicons of these languages. The pronunciation systems for these vocabularies originated from conscious attempts to consistently approximate the original Chinese sounds while reading Classical Chinese. They are used alongside modern varieties of Chinese in historical Chinese phonology, particularly the reconstruction of the sounds of Middle Chinese. Some other languages, such as Hmong–Mien and Kra–Dai languages, also contain large numbers of Chinese loanwords but without the systematic correspondences that characterize Sino-Xenic vocabularies.

The term was coined in 1953 by the linguist Samuel E. Martin from the Greek ξένος (xénos, 'foreign'); Martin called these borrowings "Sino-Xenic dialects".

The Yao people (simplified Chinese: 瑶族; traditional Chinese: 瑤族; pinyin: Yáozú) or Dao (Vietnamese: người Dao) is a classification for various ethnic minorities in China and Vietnam. Their majority branch is also known as Mien. They originated in the areas around Changsha, which today is the capital of Hunan province. They speak a branch of the Hmong-Mien family of languages and share a strong genetic connection to the Hmong peoples. They are believed to have diverged from the Hmong around 5,800 years ago.

They are one of the 56 officially recognized ethnic groups in China and reside in the mountainous southwest and south of the country. They also form one of the 54 ethnic groups officially recognized by Vietnam. They numbered 3,309,341 in the 2020 Chinese census and 891,151 in the 2019 Vietnamese census. An estimated 60,000 Yao of the Iu Mien branch reside in the United States, mostly in the Western coastal states.

Thailand is a country of some 70 ethnic groups, including at least 24 groups of ethnolinguistically Tai peoples, mainly the Central, Southern, Northeastern, and Northern Thais; 22 groups of Austroasiatic peoples, with substantial populations of Northern Khmer and Kuy; 11 groups speaking Sino-Tibetan languages ('hill tribes'), with the largest in population being the Karen; 3 groups of Austronesian peoples, i.e., the Malay, the majority ethnic group in the southernmost three provinces, together with the Moken and Urak Lawoi ('sea gypsies'); and both groups of Hmong-Mien. Other ethnic groups include longstanding immigrant communities such as the Chinese, Indians, Persian, and Portuguese.

The She language (Mandarin: 畲語, Shēyǔ), autonym Ho Le or Ho Ne, /hɔ22 ne53/ or Ho Nte, is a critically endangered Hmong–Mien language spoken by the She people. Most of the over 709,000 She people today speak She Chinese (possibly a variety of Hakka Chinese). Those who speak Sheyu—approximately 1,200 individuals in Guangdong Province—call themselves Ho Ne, "mountain people" (活聶; huóniè).