Major national ethnic races in Myanmar

There are eight offical major national ethnic races in Myanmar, and a set of stamps depicting these races in their traditional costumes were issued to commenerate ASEAN's 52th anniversary in 2019.

The top 2 panels depicted each pair of race standing solemnly while the bottom 2 panels depicted the races in their dance poses.   

I was in Myanmar once, but did not get the chance to visit the Post Office while I was there, so I have never seen stamps from Myanmar before.  This set of stamps is quite fascinating to me, as now that I see the traditional costumes, I think most of the people I saw then were perhaps from the ethnic race Bamar.