Traditional Culture Encyclopedia - Photography and portraiture - How to write the opening remarks of the lecture on philatelic knowledge?

How to write the opening remarks of the lecture on philatelic knowledge?

Since it is a popular lecture, attracting the audience is the first important thing. You can start with the senses. For example, when you talk about animals and buildings, first talk about these world-famous things, then switch to the corresponding stamps to express the all-encompassing characteristics of stamps, and then start your keynote lecture.