Answer:
I am a small paradise surrounded by dryness and heat.
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
I row quickly with four oars but never comes out from under my own roof.
The warmer I am the fresher I am.
I am black and white. I have strings I have keys. I make sound without my lips. I make dough with no flour
If you can spot one of these eastern warriors, it means they're not doing their job right.