Hometown.

It hasn't been long since I last left my hometown last time. However, living with Mum and Dad, I seldom come go back. But  with the feeling of intimate familiarity, every time when I'm back I always feel free and safe. The feeling I can't get in Shenzhen or other places, although I nearly grew up in Shenzhen. It's Is it that the sense of belonging? Cyan mountain, green water, cool air, bule sky.

I would say:

"It hasn't been long since I last left my hometown although living with Mum and Dad I seldom go back. However, with a feeling of familiarity, every time I'm back I always feel free and safe."

'I nearly grew up in Shenzhen' - do you mean ' I grew up nearby to Shenzhen' or 'I spent alot of time in Shenzhen when I was growing up'