Language users distributed in different places have accumulated common or unique experiences in production and life in the long-term development process. These experiences or knowledge systems are all condensed in the language. Each language group has a different understanding of nature. The aspects have reached different depths, forming a complementary distribution of the cognitive structure, and together they constitute a broad and deep knowledge system for human beings. The text is intended to explain:. ['Human knowledge systems are preserved and constructed verbally by different groups.', 'Human groups develop and use experience and knowledge through language.', 'Language promotes the differentiation of the knowledge system of various groups.', 'The depth and breadth of the experience and knowledge system of different human groups.']