How did neo-Confucianism differ from Confucianism?

Well, Neo-Confucianism Differed from Confucianism in many ways. Confucianism was the belief of a real world, not an illusion, as well as Confucianism. Confucius wrote his ideas down in The Analects.

"Do unto others as you would have others do unto you" Confucius once said. Neo-Confucianism divides the world into a material world and a spiritual world. Confucianism does not believe in a spiritual world.

Confucianism follows the Five Constant Relationships: Parent and Child, Husband and Wife, Older Sibling and Younger Sibling, Older Friend and Younger Friend, and Ruler and Subject. The goal of individuals in Neo-Confucianism is to go beyond the materal world, and to reach union with the Supreme Ultimate. Humans do this through careful examination of the moral principles.