1, we should always establish the concept that national interests are above everything else. National security involves all aspects of the country's social life and is the primary guarantee for the survival and development of the country and the nation. Science and technology have no national boundaries, but intellectuals cannot live without their own motherland. Therefore, putting national security first is the need of national interests and personal safety, and it is also the unanimous appeal of all countries in the world.

2, familiar with activities and regulations related to national security. We should know what is legal, what is illegal, what we can and cannot do. Among them, we should be particularly familiar with the following laws and regulations: constitution, national security law, secrecy law, criminal law, criminal procedure law, scientific and technological secrecy regulations, and rules for international students. Be willing to learn, be brave in asking questions and be cautious about problems with unclear legal boundaries.

3. Be good at identifying various disguises. In foreign exchanges, it is necessary to be warm and friendly, but also to be different inside and outside, neither humble nor supercilious; We should not only cherish personal friendship, but also bear in mind national interests; We can win all kinds of help and funding without losing our national dignity and personality. Camouflage is difficult to identify and easy to identify. The key is to be indifferent to fame and fortune. Those with ulterior motives should be promptly reported and cracked down according to law, and they should never be allowed to act arbitrarily.