The diversity of the international community is conducive to learning from each other's strengths and complementing each other's weaknesses. No matter whether the social systems are the same or different, they can and should learn from each other; On the contrary, no one will want to learn if they are forced again. Countries should also find a convergence of interests and cooperate to solve the common problems faced by mankind. These areas of cooperation are very wide, such as sustainable development, pollution control, opposition to drugs and terrorist activities, etc.
The differences in the degree of civilization between countries are narrowing day by day can be inferred.