The ocean's waves wash away all traces of the past, so that everything returns to new beginnings. It doesn't bother him that he has to start all over again. He's just listening to what the voice inside is telling him to do.
海水沖走了沙灘上的足跡，一切可以歸零，從新開始，他不在乎從頭學起，只在乎內心想學就好。