Plucked out of birds, I am now dipped in ink and used to write

I have no eyes nor ears from that of biology but can see and hear where there is no sound. I carrry a gold disc to compensate for my shortcomings. I have traveled for almost half a century to find a friend.

I’m a puddle that peaked in medieval times, I go around houses like property lines. I don’t wave hello, I just sit and float What am I?

A two-wheeled transport from the past, To add two more, remove my last. Different beasts can steer my course, But don’t put me before the horse.

Among the four, I represent West. But I am king of the East, Engaged in eternal conflict with the dragon.