China is a country with the largest in the world. Too many people cause too much ,for example,the food problem. And today, in order to the increasing population,China has carried out the of family planning. That is late marriage,late childbirth and having fewer but healthier . Men of 22 years old and of 20 years old can get married. If a man of 25 gets married to a woman of 23 or 23 ,their marriage is a late marriage. Childbirth by a woman at the of 25 or more is late childbirth.

    The encourages people to have only one child in a family. And one -child policy is still needed in China in the years. We have a long way to go.