In order to make the story true enough, the director group studied a lot of materials in the creative process, communicated with local ethnic experts and historical consultants in Inner Mongolia, and conducted in-depth research and understanding of ethnic customs in different times. These details were reflected in the film. During the filming process, the actors also personally experienced and felt this true and warm story, and also felt the simplicity and kindness of the people in Inner Mongolia: the children who came to the grassland were naturally accepted and lived with the people on the grassland to become family members; Grassland people don't use the name of "orphans" intimately, but call them "children" affectionately. Ma Su, who plays the grassland mother Na Ren Sa, said with emotion: "The conditions at that time were too difficult, and I could feel the selfless love of the grassland people." Ayanga, an actor in "Papa Yi Deer on the Grassland", said that he was proud to be a Mongolian. Grassland opened its broad mind, embraced homeless children, and left a section of national friendship in the long river of years.