UNESCO Office Beijing has been extending its assistance to the preservation and revitalisation of endangered languages of selected ethnic minority groups in China in partnership with the Chinese Academy of Social Science. Project for each language consists of field recording, transcription of daily discourse using the International Phonetic Alphabet, support to the introduction of mother tongue education into the formal education system, and so forth. Research has already been completed for the minority languages of "Uygur", "Anong", "She", and "Manchu", while research on "Hezhen" (population estimated around 4,300) and "Tujia" languages is ongoing.