Ejinhoro, where Genghis Khan's mausoleum is located, has held a grand rally every year on March 2 1 Day of the lunar calendar since ancient times. Tens of thousands of Mongolian people from the vast areas in the north and south of the desert rode horses, drove cars, pulled yurts or felt tents and carried daily necessities. They gathered in the Great Yijinhuoluoba Changhuge Grassland, where the Eighth White House of Genghis Khan is located, and participated in the grand festival activities for nearly ten days. During this period, many businessmen from far and near also came here with various commodities, so that the whole Bayin Changhuge grassland was covered with palaces and yurts, and there were bustling crowds everywhere, forming an unprecedented event. In the Qing Dynasty, Zasak, the prince of the Seven Flags headed by the leader of the Yikezhao League, met every three years in the third month of the lunar calendar 13 to offer sacrifices to the Aobao and Junwangqi of the League near Subulega Temple, and then the princes of each flag stayed at Subulega Temple Station to attend the three-day Nadam Festival held by the League. During the period, horse racing, wrestling and archery were held, as well as conscription examinations, military parades and various flag-making alliances.

Shortly after the founding of People's Republic of China (PRC), on May 7, 1950, which was the day of Genghis Khan Chagan Suluke Festival on March 2 1 lunar calendar, the people's government of Yikezhao Autonomous Region held a memorial meeting in Genghis Khan's mausoleum, which was the first "sacrifice meeting" after the founding of New China. The chairman of the government of Yikezhao League, the prince of Zasak Banner, the chief priest of Erhuyatu, Ji Nong, the head of the government of the League and the representatives of the princes of all flags accompanied the sacrifice. During the sacrifice, a five-color Hada, a mare and nine sheep were used to read out the eulogy, saying briefly: "My people in Inner Mongolia have been ravaged by the Kuomintang reactionaries' Han chauvinism for a long time, with a sharp decline in population and shrinking land, being oppressed and on the verge of extinction. Today has been liberated. In the future, under the leadership of China * * * Production Party and China people's leader Chairman Mao, we will unite the people of all ethnic groups throughout the country and strive to build a new China and Xinyi Mongolia. "The conference started on May 5th and ended in June 1 1. During the conference, the Preparatory Committee held horse racing, wrestling, drama, yangko and other activities. The projection team of the Sino-Soviet Friendship Association screened the Soviet films "May 1 Review" and "Rebuilding the Desert", and specially invited Yimeng Drama Club and Yimeng Cadre School to perform the Mongolian-Chinese joint opera "Mongolian Family". There is a temporary shopping mall attached to the conference, where more than 230 public and private vendors from Baotou, Shenmu, Yulin and Fugu set up stalls to promote material exchange. The People's Government of Suiyuan Province allocated 6,543,800,000 yuan (equivalent to 654,38,800,000 yuan after the change) for the conference as the fund for the big sacrifice. Since then, during the Chagan Suluke Festival every year, the government of Yikezhaomeng will hold a "sacrifice meeting", hold a traditional Nadam convention and exchange materials. This grand event was originally called "Yi Ke Zhao Meng Sacrifice Meeting and Material Exchange Meeting", and since 1954 it has been called "Sacrifice Meeting, Nadam Meeting and Material Exchange Meeting".

According to the climatic reasons, from 1956, that is, Erdos Nadam Festival held during Chagan Suluke Festival in spring after the completion of Genghis Khan Mausoleum, to Genghis Khan Xia Naoer Festival on May 15 of the lunar calendar. From 1990, the "IqZhao Meng Minority Games" will be held once a year or every two years to replace the Nadam Conference of the All-China League. From 65438 to 0999, during the first Ordos Cultural Festival and the 11th Asian Art Festival in 2009, the Erdos Nadam Conference was held by the Ordos Municipal People's Government in Genghis Khan Mausoleum.