Twas a normal day in the Earth Kingdom.
Earth King Lei was pondering upon some books and was reading about the greatest Earth Bender to ever exist.
He was sitting there thinking,
"I'll never live up to these great fighters, if only I were better at Earth Bending."
He kept reading and came across a clipping in the book. It was an Earth Bending technique.
He had never seen anything like it.
If he knew anyone who would know what it is, it was General Yu.
He had servants go and find General Yu and get him here.
I am Earth King Lei. You do not protect and serve me, I protect and serve you.