There are two situations where we can speak Mongolian. The first thing is to meet acquaintances, because hometown dialect will bring back good memories. The second is to say something private or not to be heard by outsiders. Many times it's because the environment is noisy and it's not good to say privacy loudly, so I say it in Mongolian. As for the number of Mongolians in 10, I can't say, because the percentage of Mongolians is different in different regions. For example, my friends in my life circle have five or six Mongolians in 10, but my friend Han, I am the only Mongolian among all his friends, that is, 10 Mongolians in 1 0.