This rule works about 90% of the time. Whenever or wherever I go I can always tell Hmong from other Asians even if they all look the same, dress the same, and having the same demeanor.
You can easily tell the Hmong from the other Asians because Hmong are generally obese/fat.
I swear go to any Hmong function/gathering today and I guarantee you will see a lot of fat young people.
I am in my 40s and when I was a teenager and in my 20s in the 1990s my Hmong friends and I were not fat. I mean there were exceptions but most of us were not fat. Today I look at my nephews/nieces and their young friends and there are so many fatties it’s sad and sickening.