My hometown/ Goguryeo (2016),... anyone knows where to watch this documentary?

Hi all.... do you know where to watch this documentary movie about Goguryeo?

Title: Goguryeo (2016) or My Hometown (2016)

https://mydramalist.com/21597-goguryeo)

other info: 

http://movie.daum.net/moviedb/main?movieId=106997