As you go-frozen, ask who is feeding the wolf?

In the late spring of March, yang huan had a long grass. The sky was frozen and asked who fed the wolf?
The heart is pity, the wolf heart alone; the sky is difficult to test, the world is like a frost.

The world only knows the poor sheep, and sympathizes with the sheep. Few people know the pain of the wolf and the loneliness of the wolf. The world only saw the cruelty of the wolf when eating the sheep, but could not see the wolf endure hunger and loneliness walking in the ice and snow for food. When a goat is hungry, it's time to eat grass. What if a wolf is hungry? Should I starve to death?