The song Sun in the Hills tells stories from the dual perspectives of left-behind children and prosecutors for juvenile affairs. It illustrates how judicial authorities, social work departments, the Communist Youth League of China, women's federations and other relevant institutions join hands to safeguard the rights and interests of these children. With the law as their shield and compassion as their sword, they work together to create a safe and nurturing environment under the blue sky of the rule of law. Blending artistic expression with a strong sense of social responsibility, this song stands out as a remarkable piece of public interest work.