Literature Reference: 勉之，勉之！——《论语·雍也》 Strive, strive! Source from 'The Analects of Confucius, Yong Ye'.
勉:
Encouragement and diligence, symbolizing earnestness in work, lead to the accomplishment of great deeds.
Meaning: To strive and encourage, symbolizing diligence and continuous progress.