After the age of 30, you should make friends with like-minded, mature, independent and self-reliant people. Because the age of 30 is already a middle-aged stage. At this time, making friends is no longer like the immature feeling of childhood and youth, but needs to expand one's circle of friends with a rational and calm mind. Therefore, I think making friends after the age of 30 requires less friends, but the quality must be fine. Oh, after the age of 30, most of my friends are married, have a successful family and go to school. I think it is more important to choose friends with less interest. In this way, it is also a kind of liberation and a kind of liberation for yourself.