Dooman River
두만강 (original)
Chang-ho, 12, becomes friend with a North-Korean immigrant about the same age who just crossed the Dooman river, border between North-Korea and China. His mute sister and his wise grand-father will get along with him in a series of misfortunes.
Starring Cui Jian, Lan Yin , Jin-Long Lin
It's a drama movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United States.