The imbalance in the development of science and technology in the world today is more prominent due to the confidentiality of science and technology between countries, regions, regions, and groups. However, all inventions and creations of science and technology should be the wealth of all humankind. Neither groups nor individuals should own it for a long time. What is the main point of this passage? ['Should learn advanced science and technology from abroad.', 'The confidentiality of science is limited, and sooner or later.', 'Confidentiality of science and technology should be strengthened.', 'Science and technology are the wealth of all mankind and should not and should not be kept secret for a long time.']