Hello, dear, because after the age of 30, people's lives will be more focused on family and work, and their free communication time will be less and less, which directly leads to more and more difficulties in making friends.

Confucius told people to stand at the age of 30, mainly because they learned something at the age of 30 and needed to stand on their feet in society and find their own position. Moreover, at the age of 30, they are mature and more cautious in making friends.

If you want to know more about the age confusion, you can ask questions again and we can help you solve it.