On June 23, a 4-year-old boy from Yueqing City, Wenzhou, left home alone and walked nearly 3 km to give two bottles of milk to his 13-year-old sister who had classes at an institution because he missed her too much. A policeman happened to meet the little boy on the street. With the help of the police, the boy delivered the milk to his sister successfully. The police learned that the parents were out to work, so the kids live with their grandmother. The teachers of the institution took care of the little boy after the police left. Later in the afternoon, the grandmother picked up the brother and the sister.