Thank you for answers.
When we told O3a3c we mean former O3a5. Is it so?
At this picture we can see O3a5 at Tibet...
My grand... grand father was born in Mongolia. I know his russian name whaen he change the religion, but I don't know his mongolian name...
My face -
it is typical for Russian, but features of the Asian origin (an eye for example, cheekbones) are visible. And photo of my relatives on the father - grandfathers, great-grandfathers - quite mongol-Buryat persons.
I did a verification and yes, O3a3c is formerly O3a5.
So you could really be of either Tibetan or Han origin afterall then?
Both are high possibilities since both share this gene, and both interact closely with Mongols.
Its hard to guess which!
Your photo reminds me of the great Rachmaninov too - clearly Russian, but with Asian features.
Only he's much thinner.