Gannan grassland in June of the lunar calendar has a cool climate and flowers. At this time, from the front of the house to the bank of the Yellow River, the smoke from tents and picnics can be seen everywhere on the top of the mountain, lawn, river and Woods. People, institutions, classmates, friends, collective organizations or voluntary groups in Tibetan areas have picnics on the grass beach, sing in the wilderness, play in drunkenness and vent between heaven and earth. People eat big bowls of wine and chunks of meat, as if they were in ancient times and returned to nature. During this period, people can revel at will, and some excessive words and behaviors are regarded as normal at this time. If they are angry about it, they will be laughed at.
During the Langshan Festival, some folk cultural and sports activities and economic and trade activities were also carried out, the most famous of which were Tibetan opera performance, national instrumental music performance, national snack exhibition and national sports meeting.