[Use a tree to describe the relationship between theory, technology, and application. Theory is the root, technology is the branch, and application is the leaf. When the wind comes and the season changes, most of the leaves are about to fall. We place our hopes on BAT, because we expect BAT to be able to innovate in technology and make theoretical breakthroughs, not just the leaves falling in the wind; it is more rooted in basic research, not business and business models, and exhausting business models. Long-term technological innovation will inevitably bring about qualitative changes in theory, and application is the driving point. Don't use it, you must use it, and come up with your own theories and technologies. In the future textbooks, the titles of the theories will be the Chinese names of the Chinese people. This is the author's expectation for large enterprises. Interests come first, and the hardships of basic research and the difficulty in outputting results are also the reasons why most people are reluctant to gnaw on them. 】