Introduction to the Astronomy and Calendar Exhibition Hall: Uses sand-made Kalachakra mandala, astronomical calendar tools, ancient books, thangkas, statues of Tibetan calendar mathematicians who have made outstanding contributions in the past dynasties and modern scientific and technological means to recreate the scene and simulate the Tibetan people Calendar calculations of the movement of the sun, moon, and stars demonstrate its role and calculation methods in Tibetan calendar calculations, weather forecasts, and orientation determination.