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Are my sentences correct?

He was of a Russian, unlike many other locals with typical Mongolian features. Every winter, he would lock himself up in a little cabin lost in the woods and spend five, sometimes six cold months hunting. In the summer, he worked down in the valley, taking tourist groups on tours, showing them the beauty of sunset, colouring pink the tip of the Mt Belukha, Siberia’s highest peak.
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Can somebody please help? I really need an advice here. Thank you!
KatiaaaAre my sentences correct? He was of a Russian, unlike many other locals with typical Mongolian features. Every winter, he would lock himself up in a little cabin lost in the woods and spend five, sometimes six cold months hunting. In the summer, he worked down in the valley, taking tourist groups on tours, showing them the beauty of sunset, colouring pink the tip of the Mt Belukha, Siberia’s highest peak.
How about this little editing?

He was Russian, with typical Mongolian features, unlike many other locals. Every winter he would lock himself up in a little cabin almost lost in the woods. There he would spend five, sometimes six, cold months hunting. In the summer, he worked down in the valley, taking groups on tours, showing them the beauty of the sunsets that give a pink tip to Mt. Belukha, Siberia's highest peak.
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Thank you, Philip!

One minor thing though, I wanted to say that the guy was Russian and therefore didn't have any Mongolian features, like the rest of the locals. Can I say this then:

"He was Russian, with no typical Mongolian features, unlike many other locals."
He was Russian, with none of the typical Mongolian features common among the other locals.
Am I the only one who thinks "lock himself up in a little cabin" is odd? My first thought was "What is he hunting if he's locked up in his cabin -- mice?"

Also, Katiaa, Philip fixed the last sentence for you -- but do you see that as you originally wrote it, it seems to be saying that the Russian spent his summers taking groups on tours, showing them the beauty of the sunset, and colouring pink the tip of Mt. Belukha?
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Yes, actually, I did have that same sense. If he's locked in, how is he hunting?
Would shut work instead of lock?

CJ