I think it's a place where good memories have taken place, maybe it's a beautiful and simple childhood he went to when he was a child, and he can't forget it for a long time.

Maybe he went there when he was young, so that he could not forget the memory of his heartbeat for a long time.

It may also be the place where he went alone, so that he could not forget the comfort in his heart for a long time.

However, the premise of these ideas is that there is some pressure and helplessness in real life. In this mood, people will recall all kinds of beautiful and pleasant things in the past. People always recall happy things in the past when they are unhappy. When they are happy, they only care about happiness and have no time to think about the past happiness ~