What were the social customs behind the scenes of the Song Dynasty's palace female sumo wrestlers and nude paintings? In the Song Dynasty, female sumo wrestling was a traditional competitive activity. The participants included palace women and noble children. The main purpose of this activity was to test the participants 'physical strength and skills, as well as to show their elegance and grace. According to legend, participants of the Song Dynasty court sumo wrestling competition needed to prove their strength and agility. In the competition, participants had to chase each other and use various techniques to avoid each other's attacks. These techniques included flapping, rolling, jumping, and so on. In addition to the competition itself, the Song Dynasty court female sumo wrestling scene also involved some erotic content. It was said that there were some painters in the Song Dynasty who specialized in painting sumo matches for the women of the court. These paintings were called "female sumo wrestling pictures". These paintings depicted the performance of some women in sumo wrestling competitions, including their body postures, movements, expressions, and so on. The play and pictures of female sumo wrestling in the court of Song Dynasty reflected some customs and cultural habits of Song Dynasty society. The Song Dynasty was an era where culture ruled the country. Culture and art occupied an important position in society. The play and pictures of female sumo in the palace reflected the love and pursuit of sports, competition and art in the Song Dynasty. At the same time, these works also reflected the sexual issues and attitudes of the Song Dynasty society.