Introduction to the Mongolian Astronomical Map: The "Mongolian Astronomical Map" in the Five Pagoda Temple is the only astronomical map labeled in Mongolian that has been found in the world so far, and has extremely high scientific research value. The celestial sphere is centered on the north celestial pole, and the longitudes of the right ascension positions of the 28 constellations are drawn. There are also five concentric circles, from the inside to the outside, they are the celestial pole circle, the summer solstice circle, the celestial equator circle, the winter solstice circle, and the celestial south pole circle. There are about 270 stars engraved in the whole map, with the number of stars reaching more than 1,550. Due to its age, the engraved imprint of the "Mongolian Astronomical Map" on the tower body has been blurred. Visitors can view rubbings of the map in the backyard exhibition hall for reference.