This sentence conveys a positive attitude towards life. It emphasizes the importance of hard work to a person's life, and thinks that only through continuous hard work can we get rich material returns, thus ensuring the stability and prosperity of life.

It embodies China's respect and admiration for labor and diligence in ancient times. In ancient China society, diligence was regarded as a virtue and an important way to realize personal value and social status. So this sentence also conveys a social value, that is, diligence is a quality worthy of admiration and respect.