Answer:
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
The eight of us move forth and back. To protect our king from the foes attack.
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
I'm tall in the morning and short in the noon. I disappear at night but I will be back soon.
What language does a billboard speak?