Narat Sierra mainly rarely smiled, because if the smile is to insult your opponents, and not a little story, it's rare to see a thank you or excuse me from the people of Russia.
The majority of Russians do not smile because if it was to insult opponents and rarely hold a little, it has not seen a word of thanks or apology from the Russians.
In Russia, most don't smile because you smile is an insult to the opponent and not to hold เล็กๆน้อยๆ and is rarely seen thanks or apology from Russian.