Santi-Vina

Santi-Vina is a 1954 Thai Bildungsroman film directed by Khru Marut. It was produced by Ratana Pestonji and Robert G. North, with American sponsorship, and won major awards at the Asia Pacific Film Festival in Tokyo. Widely regarded as a classic, it was the first Thai film to be shot in 35-mm color, but was considered lost until its rediscovery in 2014 and subsequent restoration.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.