For the realism of the story, the whole film was shot on the plateau above 4800 meters above sea level, and the shooting conditions were quite difficult, so it was impossible to replenish water and nutrition in time. Song Jia obtained kidney calculi under such harsh conditions. In order to play a Tibetan girl well, Song Jia 15 did not shoot for five days, but practiced Tibetan hard. There used to be two versions in Tibet, the Chinese version and the Tibetan version. Song Jia didn't wash her hair for a month to make her hair look more like a Tibetan girl while filming. In order to interpret the role of Tibetan women, Zhu Ziyan insisted on not taking a bath or washing her hair for a month on the plateau, and studied Tibetan hard, even at the expense of tanning herself.