The blue silk cloth is known as hadag it has an important meaning for the Mongols both in its use and by its colour.
First the hadag has an important significance in the well-wishing and greeting in Mongolian culture as it represents the highest symbol of an honorary greeting. The Mongols cherish the ancient tradition of greeting and saluting each other with respect and honour. Following this tradition, the elders and distinguished persons are greeted first. The young ones respond to them in respectable manner. They even have a traditional ceremony dedicated to greeting which takes place once a year: Tsagaan Sar. During this ceremony, the ancient tradition of greeting with a blue silk scarf is performed.
The hadag is blue because this is the most sacred colour in Mongolian culture, representing the eternal blue sky. Mongolia is also known as the Land of Blue Heaven.
The importance of the hadag in Mongolian culture can be noted from its representation on the state emblem, where it represents the welcome-greeting.