Introduction to Arrow Bamboo Sea: Arrow Bamboo Sea is 2,618 meters above sea level, 6 meters deep, and covers an area of ​​170,000 square meters. On the lakeside, there are arrow bamboos and green onions, and fir trees stand tall; in the water, the mountains face each other, and the bamboo shadows sway. Even in the dead of winter, the lake is still sparkling and full of life.