This song is a love story, or a love tragedy story.
At the beginning of the song, I recalled the unforgettable and beautiful scene of traveling with you in the past. Every time I encounter danger, you help me. Your selfless consideration warms my heart. However, the mountains are high and the waters are long, so it is difficult to meet again. At this time, it is even more unbearable to think of the warmth. So "every time I have no sleep, you will emerge", which is deeply affectionate.
"Boat" is a metaphor here, comparing life to a lonely boat sailing. In the stormy and cloudy voyage, you and I are in the same boat and help each other. Why not let "I" remember!