Located near the German-Austrian border town of Bechtesgaden, near the Alps, Lake King is the most beautiful area in the German Alps and the deepest lake in Germany. It rained heavily when we went, but there were still many tourists. They boarded the upstream ship, the foggy mountains and the green lake. The most unforgettable thing was that when the cruise ship sailed to the high mountain cliff by the lake, the ship's uncle opened the cabin door and blew a trumpet. After a period of melody, the trumpet came to a halt. A few seconds later, the same melodious melody came back from the opposite cliff. It seems that after the echo of the distant horizon has stopped, the trumpet plays a melody again, and the wonderful echo sounds again slowly. So the trumpet music and the echo of the mountains, you play me, one after another, like the sound of the sounds of heaven touching the tourists!