When the sun has set and the moon has not yet risen, the sky holds up a clear blue, stars like the sand of the Ganges are shining with silver light, and they are springing up on our heads. The constellations of the Milky Way seem to be close at hand. Go down to the tourist center. The astronomical telescopes have been moved out one by one for debugging. This photo can't be taken again, and flash is not allowed.