This sentence means: cultivate your character first, then you can manage your family, govern your country and make the world peaceful.

Self-cultivation: Simply put, it is to improve yourself and behave in a standardized way.

Qijia: It is to manage a family well and become a model for the family and a model for learning.

Governing the country: it is to govern a small vassal state, not our modern country. You know, the ancient vassal States were responsible for the Zhou royal family, which is what we usually call "the state."

Pacify the world: pacify the people of the world and let them live and work in peace and contentment, not pacify the world by force.

This sentence comes from Book of Rites University, and the original text is as follows:

If the ancient desire is obviously superior to the world, rule the country first; If you want to govern your country, you should first get your family together; If you want to reunite with your family, you should first repair your body; If you want to cultivate yourself, you should be upright first; If you want to be correct, be sincere first; To be sincere, you must know first, and you must know the style. Everyone knows everything, everyone knows it and is sincere, sincere and upright, upright and upright, well-trained and well-groomed, well-groomed and well-governed, well-groomed and well-governed.