Mencius was an ancient Chinese philosopher. His thoughts and ideas had a profound impact on Chinese culture. In the Song of Righteousness, Mencius elaborated on the concept of "Righteousness" and believed that it was a powerful moral force that could resist evil forces and protect the interests of the people. Mencius believed that "Righteousness" referred to a spirit full of justice, courage, and integrity. This spirit was not affected by the outside world, nor by the influence of evil forces. It was like a powerful river that rolled forward and finally formed an unstoppable force. In the Song of Righteousness, Mencius described the heroic deeds of a hero and explained the concept of "Righteousness". This hero was called Zhang Zhengqi. He was not afraid of power or evil, and he was determined to uphold justice and protect the interests of the people. He took the lead and fought bravely, even in the face of powerful enemies, he was not afraid and finally won. Mencius believed that Zhang Zhengqi's spirit of "Righteousness" was what the people needed and what social development needed. This kind of spirit could not only resist the influence of evil forces and protect the interests of the people, but also stimulate the people's sense of justice and responsibility to promote the harmonious development of society. In the Song of Righteousness, Mencius elaborated on the concept of "Righteousness" and believed that it was a powerful moral force that could resist evil forces and protect the interests of the people. This kind of spirit was what the Chinese people needed and what society needed.