Cherish time: flowers will bloom again, and people will never be young again. An inch of time is worth an inch of gold, but an inch of gold cannot buy an inch of time. Study diligently: work is accomplished by hard work but wasteful by play; success is achieved by thinking and destroyed by casualness. The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold. Overcome difficulties and setbacks: Every setback or unfavorable mutation carries the same or larger beneficial seeds. Only those who lie in the mud forever will never fall into the pit again. Cooperation: One fence has three stakes, one hero has three gangs. The right time is not as good as the right place, and the right place is not as good as the right people