Great unity is a broad concept that usually refers to the unity between various groups within human society or countries. It emphasized the mutual dependence and cooperation between individuals to achieve common goals and values. The importance of great unity lay in its ability to promote the development and progress of society. In a united society, people will work together to face challenges and opportunities to achieve greater goals and achievements. At the same time, great unity can also enhance social cohesion and sense of belonging, making people feel warm and united. Realizing great unity required mutual understanding and respect between members of society, as well as good communication and cooperation between individuals. At the same time, the government and society should also provide a good environment and system to create a more harmonious and stable life for people. Great unity is an important cornerstone of human society. It allows individuals and groups to move forward together and work hard for a better tomorrow.