This topic confuses a concept. We divide people into persons with no capacity, persons with limited capacity and persons with full capacity for civil conduct. This purpose is to stipulate the civil activities of citizens, and the significance lies in determining that it is invalid for 5-year-old children to buy computers. Murder cases should be divided into "criminal responsibility". When you study the murder case of 14-year-old children, the scope of your research should be people of relatively "criminal responsibility age". Although they are all 14 years old, the classification standards have different meanings. Just like studying the sugar content of apples, apples can't tell the difference between plum, king and Zhang.