Translation from China Daily article courtesy Google Translate:
In Dongyang, has already formed such an old custom: the street vendors who sell eggs boy or lad boiled eggs to their own people, would mention a plastic bucket to a school boy to collect the urine.
Students long ago got used to this, one to three grade boys to urinate, they will align the plastic bucket outside the classroom. School teachers, but also acquiesced in such conduct, they will always remind the children during illness in the cold to the plastic bucket can not pee. The children all came to listen.
People who are not familiar with the situation should surprise: the boy with the boy in urine egg is boiled eggs, eggs in the spring of stalls selling all over the boy Dongyang streets. The boy a fifty-one eggs more expensive than ordinary eggs, can always sell out of stock.