Giving benefits to others does not affect them; they are smart enough to know the distance, and wise enough to see the subtle things.

1. "Giving benefits to everyone, but not to themselves" means that Emperor Ku Gaoxin generally bestowed favors on everyone but not himself.

2. "Cong is used to know the far-reaching, and understanding is used to detect the subtle." This is the wisdom of Emperor Ku Gaoxin, who can understand long-term situations and have insight into subtle things.