He delivered a speech whose theme is “Extenics: Its Significance in Science and Prospects in Application”. Prof. Cai Wen introduced the research object, summarized the fruits of Extenics which include the research situation of extension theory, extension methodology system and extension engineering, and set forth the scientific significance and the future prospects development of Extenics.

　　He had a report on “The Intersection and Inosculation Between Extenics and Other Disciplines”. He pointed that Extenics studies the extension, innovation, transformation of things and their relationship and the transformation of contradictory problems, which has the significance of scientific methodology. Therefore, it has wide relation with other many disciplines. The intersection and inosculation between Extenics and other disciplines produces extension engineering, which could be used in many fields.

　　He pointed out that Extenisc is a kind of communicative chain and a kind of connective means. It introduces human beings’ wisdom into computers. It is a kind of tool that can combine the qualitative semantics and quantitative data. Extenics introduces the expression of measure value to social science by dint of digital. Then computing based on measure value could be done and digital tools and “computers could be used in social science” “Extenics will become a bridge between natural science and social science”

　　He made a brief summary on the conference on behalf of executive chairs. He considered that all of the reports and discussions are profound and rich in content. the conference was held at the atmosphere of democracy, equality, harmony, responsibility, saying one’s say and seeking common points while reserving difference, which is reflectd in th the acquired beneficial elicitations and five common understandings.

He delivered a speech on “The Scientific Significance of Extenics Research”:
(1)built a new discipline;      (2)Extending maths based on Extenics;
(3)proposed new concepts and extension methods;        (4)The philosophy meaning of Extenics;
(5)would become one of the basic theories of Artificial Intelligence.

　　She pointed out the four basic characteristics of extension methodology. They are formalized and modeling characteristics, extensible and convergent characteristics, transformable and conductible characteristics, and integral and synthetical characteristics. She considered that the methodology both embodies the ideas on system and macrocosm in ancient China and combines the analysis methods of revertible theory. Extension methods are effective methods in analyzing, transforming, reasoning and judging contradictory problems and generating strategies for solving them.

　　In his special speech of “The Opening-up of Extenics to Mathematical Basic and Logic”, pointed out that extension set breaks through the forbidden zone of concept on set and makes set have a kind of innovative and abnormal characteristics. Extension set is a kind of quantitative tool which could express the process of a matter’s changing from one state or “status” to its opposite. And it also can express the changeable characteristic of things.

　　In the speech on “The Philosophical Basic of Extenics”, pointed out that Extenics assimilates the formalized characteristic of formal logic, adopts the thought of studying relation and development in dialectic logic. Then a kind of new logic that changes contradictory problems to compatible ones is formed. It is the important theoretical innovation and practical innovation of Extenics

　　He pointed out in his speech that Extenics is a discipline which studies contradictory problems solving. contradictory problems solving is an important intelligent activity, and it also embodies the level of artificial intelligence. It emphasizes the exertion of intelligence and is more innovative than general problems solving. The deep research of contradictory problems solving is helpful to the improvement of theoretical level of AI.

　　He made a report on “The Future Development of Extenics”. He put forward the directions of the future development of Extenics. They are: to establish Extenics as a new discipline which has ripe theory and wide applications; to create intelligent machines solving contradictory problems; and to achieve one-up international fruits in several aspects with the application and popularity in many fields.

　　He made a report on“the intersection and blending of Extenics and management”, which introduced the basic ideas, concepts and contents of management extension engineering. He pointed out that a mass of strange contradictions appeared in economy, politics and society with the coming of knowledge economy. The further research on the idea that takes management process as a process of dealing with contradictory problems by using pioneering and innovative methods would form a new management idea, which is fit for sharply mutative environment.

　　She pointed out in her speech on “The Application of Extenics in Engineering Technology” that the function of Extenics is more and more important in solving pratical engineering problems. A lot of national and overseas scholars have initiated a series of distinctive new fields based on Extenics, such as extension control, extension detecting and extension designing. Up to now, extension designing softwares have been developed and manufactured. In the future, more products based on extension controlling, extension detecting and extension designing will appear.