First, how can plum blossom smell when it is not bitter cold? -- Feng Menglong
2. Those who dare to struggle are not afraid of difficulties in their hearts.
Third, there is no dangerous road for the brave.
4. Everything is bitter before it matures. -- Cyrus
5. people are not cowardly until they are at the end of their tether and can extricate themselves. -- Xu Beihong
6. A person's value and evaluation lie in his mind and will. -- Montaigne
7.only by going upstream can we find the source of water.
8. There is no royal road to science. Only those who do not fear hard work and climb steep mountain paths have the hope of reaching a glorious summit. -- Marx
9. Ten thousand boxes are not obtained by one plough, and the trees in dry days are not the best in ten days. -- Ge Hong
10. Sword blades are sharpened and plum blossom fragrance comes from bitter cold.