Buryat is the national language of Buryat. One of the two, along with Russian, state languages of the Republic of Buryatia. Not all Buryats speak their native language, but they still understand. Some just don't talk because there's no accent like Buryats. I don't know Buryat so well, but I still know how to speak and understand it. I believe that every nation should know their native language.