Standing in the northwest direction of the Nagura Pass, I saw Nam Co. like an elliptical light green mirror, set in the arms of the mountains and the grasslands. It just snowed the day before, and the air of Namco was washed more lightly. Namco is a Tibetan language, meaning the lake in the sky. It is also the holy lake in the hearts of Tibetan compatriots. Namco is a sheep. When the holy lake is open in the Year of the Sheep, it is a grand festival for Tibetans. Thousands of believers inside and outside Tibet are flooding, and they turn their hands and turn to the lake to worship. It took half a month to 20 days to walk around Nampo, which is 1920 square kilometers. It is a pity that we are not coming to see the spectacular scene of thousands of people turning to the lake. When I looked over the green and wide lake and cast it on the opposite bank, I couldn't help but slammed it: a veined snow-capped mountain ran across the horizon, its snow-white jagged peaks lined with blue skies, and the lake was so embarrassing. And so heroic, sturdy, straight up and down the distant horizon. This is the Nyainqentanglha Mountain, which is surrounded by the lake. The green water of Nam Co, the green water of the Lake, is the melting of snow and ice. Its main peak at 7117 meters above sea level is the mountain.