In the Warring States period(战国时期), there was an old man (all) Sai Weng. His special skill was taking care of horses and he was very good at it. That is how he made money to live at his village. One day he lost one of his (well) horses. His neighbor told Sai Weng how sorry he was about this. Sai Weng said, "Do not be sorry for me. I agree with you that this looks like bad luck now, but let us wait and see what happens." After a while, the horse Sai Weng had lost returned, but it did not come along. Another very beautiful horse was with it. Sai Weng's other neighbor arrived his door and congratulated him. Sai Weng (reply), "This seems like good luck now, but let us wait and see." A few days later, Sai Weng's son decided to go out to ride the new horse. During the ride, the horse was nervous and threw its rider to the ground. Sai Weng's son broke his leg. This time both neighbors came to console(安慰) Sai Weng, but Sai Weng (simple) said, "Thank you, but how could we know this is not good thing for me?" One year later, the Emperor's soldiers went to the village to collet healthy young (man) to fight in the war. Sai Weng's son (require) to join the army. However, he didn't join the army he was crippled(瘸的).