Shi Nai'an was a Chinese writer from the 14th century, best known for his classic novel, Water Margin. This work is one of the Four Great Classical Novels of Chinese literature and tells the story of a group of outlaws who band together to fight against corrupt officials and injustice. Little is known about Shi Nai'an's life, but he is believed to have lived during the Yuan and Ming dynasties. His writing reflects themes of loyalty, bravery, and the struggle against oppression, which resonate with readers even today.