Son of the Northeast (1982)

Son of the Northeast (, or Look Isan, also Child of the Northeast) is a 1982 historical drama film set in 1930s Isan, or northeastern Thailand. The film is directed by Vichit Kounavudhi and is based on a S.E.A. Write Award-winning book by Kampoon Boonthavee. Filmed in a documentary style, the story follows a tight-knit group of Isan subsistence farmers as they struggle against drought and other depredations.

More at Wikipedia.