Hello, I am Soon Oh.
I was from Seoul, South Korea. I was private tutor of Korean language subject for Korean middle high school student and taught Korean language to Expats in Seoul and Vietnamese in Ha Noi.
You may learn Korean at many Trung Tam tieng Han in VN.
however, for the aspect of expected – effect/investment, 1:1 or 1:2~3 lesson is the best.
You can have one time Trial lesson at Dist.1
So, what are you waiting for?