The grass is delicate, but it is the first hero in preventing wind and sand, regulating the climate, purifying the air, and conserving water. Every grass can be called the most loyal defender of the ecological environment. This episode will not only lead the audience to ride in Erguna and Bayinbulak prairie, but also to see the miraculous face change of the Loess Plateau after wearing green clothes, and to see Minqin in the Hexi Corridor. Generations of people have worked hard for a long time, using grass to create a miracle of people entering the sand and retreating.