The industry is good at diligence and wasteful at play. The success is achieved by thinking and destroyed by following.

"The work is good at diligence but wasteful at play" is a famous saying of Han Yu, which means: : The proficiency of studies lies in diligence, while the proficiency in studies lies in playfulness.

The proficiency in studies lies in diligence and playfulness, which comes from Han Yu’s "Encouragement to Learning". It means that studies are proficient due to diligence, but they are wasted. In the midst of laughter, things are successful due to repeated thinking, but they can be destroyed by casualness. Throughout the ages, many people who have achieved success in their careers have come from proficiency, diligence, and play. There is a good allusion that tells the same truth. .