This made him very happy, for he thought the boy had come to play with him.
He spoke to the stranger in a very friendly way, but received no reply.
He laughed and waved his hand at the boy in the glass, who did the same thing, in exactly the same way.
Then Woo Sing thought, "I will go closer. It may be that he does not hear me". But when he began to walk, the other boy imitated him.
Woo Sing stopped to think about these strange actions, and he said to himself, "This boy mocks me, he does everything that I do;" and the more he thought about it, the angrier ho became, and soon he noticed that the boy became angry too.
So Woo Sing grew very much enraged and struck the boy in the glass, but he only hurt his hand and he went crying to his father.
The father said, "The boy you saw was your own image. This should teach you an important lesson, my son. You ought never to show your anger before other people. You struck the boy in the glass and hurt only yourself.
"Now remember, that in real life when you strike without cause you will hurt yourself most of all."
