Tortoise Mountain Wakes Up

KOAN:

Yantou and Xuefeng were snowed in on Tortoise Mountain.
Day after day, Yantou slept while Xuefeng sat up and meditated.
On the third day, Yantou sat up too and said, “Get some sleep.
What do you think you are, a roadside shrine?”
Xuefeng touched his chest and said, “My heart isn’t at peace. I can’t fool myself.”
Yantou gave a great yell. “HAAA! Don’t you know that the family treasure
doesn’t come in through the gate?” he said.
“Let the teaching flow out from your own breast to cover the sky and the earth.”
Xuefeng was suddenly enlightened and cried out,
“Today Tortoise Mountain has finally awakened!”

—Zen Story