What is the important implication of the 'one child norm' in China?

The "one child norm" in China has led to several important implications:

1. Aging Population: The policy contributed to a rapidly aging population, with a higher ratio of elderly to young people.

2. Gender Imbalance: A cultural preference for male children led to a significant gender imbalance.

3. Economic Impact: A smaller working-age population may strain economic growth and increase the burden on social services.

4. Social Changes: Changes in family structure and dynamics, with increasing numbers of single-child households.

These results pose both social and economic challenges for China.