YOU SAID:
Hi i live in the mountains high up.
INTO JAPANESE
こんにちは、私は高い山の中に住んでいます。
BACK INTO ENGLISH
Hello, I live in a high mountain.
INTO JAPANESE
こんにちは、私は高い山に住んでいます。
BACK INTO ENGLISH
Hello, I live in a high mountain.
That didn't even make that much sense in English.