Introduction to the main hall: Colorful marbles and mosaics are inlaid with geometric patterns favored by Arabs on the four walls. The hall is paved with red carpet, and some exquisite decorations are cleverly placed in the corners. Under the illumination of the giant 20-meter-high crystal chandelier, the entire hall looks even more magnificent. The main hall can accommodate 25,000 Muslims for prayer. The marble floor in the hall is heated all year round. When the temperature drops in winter, the floor can be heated automatically.