Introduction to offering sacrifices to Aobao: The tradition of offering sacrifices to Aobao has a history of more than 200 years. Every year on the 18th day of the fifth lunar month, herdsmen on the Xilamuren grassland hold a grand ceremony to offer sacrifices to Aobao. At this time, the red Geer Aobao decoration was grand and majestic. The blue and white prayer flags and colorful silks and satins swayed in the breeze, making the Aobao more dazzling. When offering sacrifices to Aobao, herdsmen will offer whole sheep, butter, cheese, kumiss, etc., and then the lama will light a fire and chant sutras. Herdsmen circle Aobao three times from left to right to pray for good weather, fattening of cattle, and safety of people.