How to improve the patriotic enthusiasm and cohesion of the whole nation?

Improving national cohesion is divided into two parts: domestic and overseas, which are interlinked. With the increasing mobility of talents, the exchanges between domestic and overseas Chinese are getting closer and closer. Doing domestic affairs well will attract more overseas Chinese, enhance their national pride and promote Chinese unity; On the contrary, it will cause internal friction and brain drain and expand the negative effects overseas. Since it is cohesion, the key is to have a core (such as American individualism, German scientific spirit and Japanese Bushido spirit), and the centripetal force generated around this core will firmly gather people and things around. The core of Chinese national spirit is patriotism. This core must stand the test of history and be eternal, so it must be national and a combination of national spirit and traditional culture.