Short-distance running coach He Zheng returned to his hometown to teach, finding that the village primary school had no running track, and children could only train barefoot on field ridges. By the threshing ground, he used lime to draw a simple running track, leading Xiao Shitou, Yaya, and Tiedan to persist in practice. Xiao Shitou had outstanding talent, yet lacked fitting running shoes; He Zheng helped him fight for a competition opportunity and handed his own running shoes to him. In the county competition, Xiao Shitou fought hard and ultimately won third place. Returning to the village, he pasted the certificate on the classroom wall, the mud on his shoes witnessing their effort, teachers and students continuing to run, and the children's starting line also extending forward.