In the Warring States Period, a young man in the town of Shouling, the state of Yan, once heard that people in Handan, the capital of the state of Zhao, had an elegant way of walking. So he went a long way there to learn.
Arriving in the town of Handan, the young man set about watching how the people there walk in the street. He was well indulged in the study all day long; sometimes he followed one this way and sometimes another that way.
As time passed, the young man felt more and more worried because he had not learned to walk as the natives there. And worse luck, in the end, he found himself unable to walk in his own way. So he had no choice but to crawl home.