1, Li Shizhen compiled Compendium of Materia Medica from 1552 to 1578, which lasted for 27 years. The preparation time is very long and the scale is huge. The book "Outline" was written by father and son and disciple Pang Lumen, and the second son, Jane Yuan, painted the book, which reflected Li Shizhen's persistence.
2. Qi Baishi observed and painted shrimps all his life, striving to profoundly express the physical and mental characteristics of shrimps. Qi Baishi began to draw shrimps when he was young. After 40 years old, I copied shrimps painted by painters such as Xu Wei and Li Futang in Ming and Qing Dynasties. At the age of 63, the shrimp painted by Qi Baishi was very similar, but not "alive" enough. He raised several long-legged shrimps in a bowl, put them in a painting case and observed them every day. As a result, the method of drawing shrimp has changed, and shrimp has become one of the representative artistic symbols of Qi Baishi.
Edison tried nearly 1600 materials to develop electric lamps. It took 45 hours to light the filament of this electric lamp. This is the first electric lamp with wide practical value. This kind of electric lamp has many names such as "high resistance incandescent lamp" and "carbonized cotton filament lamp", all of which are made of carbonized cotton filament.
4. Wang Xianzhi practiced calligraphy 18 vats, and Wang Xianzhi practiced hard for five years from the basic strokes according to his father's requirements. I am ashamed and feel that my writing skills are far from perfect, so I put myself into my study and study hard every day. Clever Wang Xianzhi is deeply aware that there is no shortcut to writing, only the word "diligence".
5. For many years, Chen Jingrun worked tirelessly in mathematics research, forgetting to eat or sleep, and working more than 12 hours a day. When he was suffering from illness, he never stopped his pursuit and made great contributions to the development of mathematics. His deeds and spirit of hard work and dedication are widely celebrated throughout the country, and he has become a legend and a model for learning in the minds of generations of young people.
Baidu Encyclopedia-Li Shizhen
Baidu Encyclopedia-Qi Baishi
Baidu encyclopedia-Edison
Baidu Encyclopedia-Wang Xianzhi
Baidu Encyclopedia-Chen Jingrun