In Asia, it's Viet nam. Somewhere around, for example, Hong Kong is the same.
Thank you so much, I've wore an white shirt, plain black tie and a black coat to the funeral (as I don't have any black or charcoal suit, just some navy and blue) and I think it's very appropriate.
I don't know whether I'm correct or not when describing the look of that suit, but it's a 2 button holes suit, maybe the old style. I'll post a pic of this old jacket later.