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During the Song dynasty (960-1279 CE), Zhu Xi emerged as a prominent figure in Chinese philosophy, especially Neo-Confucianism. He was a prolific writer and educator, leaving a lasting impact on Chinese thought and culture. Zhu Xi's teachings emphasized ethical principles, the investigation of things, and the cultivation of self. His commentaries on the Confucian classics became widely accepted, shaping the understanding of Confucianism for generations.