As long as it is beneficial to others and yourself, it is meaningful work. Society is endless and labor is eternal. Labor enhances people's wisdom, which is the crystallization of labor in the continuous evolution of human beings. Wisdom promotes labor step by step, and the richer the experience, the higher the scientific and technological content. To maintain the continuous glory of labor creation, it is inseparable from inheritance and promotion. Labor inheritance is a technical problem, and labor promotion is a spiritual encouragement.