Do you know who I am?

All the year round, I rest my head on the waves and listen to the waves; day after day, I usher in the rising sun and bid farewell to the sunset on the sea; day and night, I witness the charm of the sea and savor the feelings of the sea

Although I am a piece of paper floating on the water for years, I am not a boat. Because I'm just a little one. Even the grasshopper should be bigger than me, not to mention the ten-thousand-ton ships.

Let loose your imagination. The ship braved the wind and waves on the sea and galloped freely like a fish in water. Read ten thousand books and travel ten thousand miles. Ships are naturally knowledgeable because they can go deep into the ocean and even travel around the world. And I am not free, only in a corner, naturally I do not have the luck of a boat.

But I feel good about myself, because I seem to have entered the realm of Zheng Banqiao clinging to the green mountains. I am not in a corner of seclusion, but concentrate on marking the direction and boundaries of the waterway, indicating the location of the reef and ensuring safe navigation. So when the boat passed in front of me, I would say loudly: hi! Guys, I envy you, but I'm not jealous. The ship will also slow down and even honk. At this time, I felt so full that I couldn't help humming a little song: like a ship not drifting in the water, I took it easy to travel around the world. If it were not for the light settlement in a corner, thousands of miles in a boat might be empty.

Do you know who I am?