Liang Qichao, the author of "Dedication and Happy Industry", believes that the reasons for happy work are:

First, because every profession has many layers and twists and turns. Among them, watching its changing and progressing state is the most intimate and interesting.

Second, because the achievement of every career is inseparable from struggle; struggle step by step to increase the weight of happiness from hard work.

Third, due to the nature of the profession, one often has to compare with others in the same industry, just like playing ball, and gets pleasure from winning.

Fourth, when you concentrate on a career, you can put an end to many wandering thoughts and delusions, and save endless boredom. Confucius said: "Those who know something are not as good as those who are good at it, and those who are good at it are not as good as those who are happy." Only when you can appreciate the interest in your career can your life be valuable. Confucius recounted his life and said: "As a human being, he is so angry that he forgets to eat, and he is happy and forgets his worries. He does not know that old age is coming." This kind of life is really an ideal life for human beings.