Long long ago, there lived an old man named Sai Weng. One day he found his horse missing. It was said that the horse was seen running outside the border of the country. Hearing the news, the neighbors came to comfort him for the unfortunate loss. But Sai Weng was unexpectedly calm and said, "It doesn't matter; it may not be a bad event. On the contrary, I think it can be a good one."
One night Sai Weng heard some noises of horses and got up to see. To his surprise, he saw another beautiful horse as well as his own. It was clear that his horse had brought a companion home. Hearing the news, the neighbors all came to say congratulations on his good luck. At the greetings, however, Sai Weng was very calm and thoughtful. He added, "It is true that I got a new horse for nothing, but it is hard to say whether it is good or bad. It may be an unlucky thing."
Who can expect what said was found to be right. The son of Sai Weng was very fond of the horse brought home, and one day, when he was riding the horse, he fell off the horse and terribly hurt his left leg. From then on he was never able to walk freely as he used to be. "Nothing serious," Sai Weng said, "perhaps it is going to be good."
A year later, many of the youth there were recruited to fight in a war and most of them died. The son of Sai Weng was absolved from the obligation for his disability, so he escaped death.