I think the mountains, rivers, lakes and seas means his past, just like a person who has gone through the wind and rain over the mountains, walking through rivers, lakes and seas has a rich experience and in the eyes of outsiders in the dashing life, but in the end is also sleeping and waking up in the night and the day, become stable, have their own loved ones, and have a home.

There is a sense of destiny, unrestrained cruising between the mountains and the sea of the teenager's final destination is love and family.