"Train to Busan 2" (also marketed internationally as "Peninsula") is the 2020 South Korean follow-up to the acclaimed 2016 zombie thriller "Train to Busan." The phrase "Mongol heleer best" appears to mix Mongolian language ("Mongol heleer" = "in Mongolian") with an English superlative ("best"), suggesting a user interest in an evaluation or guide to the best Mongolian-dubbed or Mongolian-subtitled versions of the film, or a discussion of how the film is received and presented in Mongolian.
The official theatrical dub has the best sync and voice acting. Avoid fan-made dubs (often low audio quality or out-of-sync). train to busan 2 mongol heleer best
If you meant in Mongolian — yes, that also has a popular dub circulating on YouTube (fan-dubbed, not official). "Train to Busan 2" (also marketed internationally as