1. Endure the pain that others can't bear, and eat the pain that others can't eat, in order to reap what others can't.

2. People need to work hard and sweat to succeed. Only after working hard can they gain and realize the value of life they pursue.

3. No pains, no gains. To reap well, you must cultivate well.

4. Nothing or things are obtained for nothing. Everyone has to pay the hardest pain to get back what belongs to him. This is giving and returning.

5. Good things always take time, and you can't do great things without a lot of hard work and labor. If you want to eat walnuts, you must first bite open the hard shell.