One: I did engage in similar activities, and I know what it means.
Second, after learning, I have a brief understanding of the business.
Third, rely on a large number of materials to read, understand the details, and add immortal imagination to create imaginary situations. This is actually a bit "I just write well, what's more, most of you don't understand this"-and this kind of novel usually has a context, "This is not pure realism, even if you have read it, don't take it seriously". (including they haven't seen it before, but they have collected a lot of materials to read before writing. )