There are some differences between the National Natural Science Foundation of China and the Beijing Natural Science Foundation in application difficulty. China's natural application conditions are more stringent, including higher requirements for applicants' academic level and scientific research achievements. In addition, China naturally has more funds, attracting more applicants and more intense competition. In contrast, Bei Ziran's application conditions are relatively relaxed, the amount of funds is also small, and the application difficulty is relatively low. So the north is naturally easy.