Late at night, a village in Shandong. A man gently sets down the gift bag in his hand, then slowly kneels in front of the tightly closed door, bowing his head heavily. As he gets up, he wipes his tears and disappears into the night. His name is Li Qiang, 30 years old. Twenty years ago, that autumn, his father passed away, and his mother left home. The ten-year-old boy stood in the yard, like a child abandoned by the whole world. Several relatives took turns to bring him home: