The word "Endeavour" is a network term, which means going through tempering, overcoming difficulties and making continuous progress. The original meaning of grinding is grinding on a millstone, and it is extended to grinding and encouragement. Secondly, there is a saying of forging ahead.
However, there is another explanation, and it is like this: The second half of "Persevere and forge ahead, live up to youth" is "Brave the wind and waves, forge ahead with determination". This sentence means: live up to your youth, overcome difficulties through tempering, defy all difficulties and obstacles, go forward bravely and make unremitting efforts towards your dreams.
words explanation
spring
1, good time. Often refers to spring.
2. Good times. Refers to youth.
encourage
1, millstone.
2. Grinding on a millstone.
3. hone; Exercise, practice.
4. motivation; Encourage.