Third grade. According to official website, People's Education Publishing House, my brother radish entered the textbook of the third grade of primary school, so my brother radish learned it in the third grade. "My Brother Radish Head" revolves around the true story of revolutionary martyr Song Zhenzhong. It tells the story that Radish was killed by secret agents many times in the first eight years of his prison life in the face of his aunt and uncle who loved him. His young mind matured early and became a revolutionary as strong as his parents.