It is impossible to be stable all the time in life. There are always things that we cannot get, there are always some people that we cannot forget, there are always some stories that we have listened to for a long time but still can't help but look back on. Those people who said goodbye may never be seen again, those places of nostalgia may no longer exist in the future, and there are many, many things that slowly disappear while being remembered.
Purpose: Cherish the people in front of you