It depends on your language proficiency and reading habits. If it's in a language you're not familiar with, it could be challenging. But if you're used to the writing style and genre of the novel, it might be easy.
In RDR2, horses have predefined states and conditions, but mang isn't a common one. The game's design focuses on more typical horse health and behavior aspects.
You can try to find it in some e - book platforms. Some well - known e - book platforms may have this novel available for reading. Check if your local library also has an e - library service where you might be able to access it.
Mang is definitely not a horse. There's no common reference or understanding that Mang represents a horse. Maybe you heard it wrongly or it's a made-up term in a very specific context that's not widely known.
Online platforms are also a good option. Check e - book platforms or some reading apps. However, make sure the source is legal. For example, Amazon Kindle might have it if it's available in digital format.
I've never come across the term 'mang bts'. It could potentially be a nickname or a code word within a particular group or community, but without more context, it's hard to say for sure.