ConTeXt has various language codes, listed in this article at the ConTeXt wiki. I do not see Korean listed. I have tried \language[ko], and the document compiles, but I have no way to verify if it is ...
When using Chinese, heiti (黑体) fonts are the equivalent of sans serif. They generally have simple lines. I want to use a heiti font for all of the titles and description labels in my document, ...