I understand that "big scene" is a relative concept. For example, if a construction worker in the water and electricity industry is occasionally lucky enough to go to the Great Hall of the People to attend a national meeting, and national leaders are present, it is considered a big occasion; but for people working in Beijing, it is possible that even if they are not present, It is commonplace for him to have high authority and be regularly arranged to attend such conferences. On the contrary, if someone working in Beijing comes to a construction site such as the Three Gorges Project and sees a huge and busy construction scene, he may think it is a "big scene"; and this is commonplace for that construction worker.

So, what I understand as "seen big scenes" should mean that he has rich experience, has traveled a lot, seen a lot, and has experienced higher-level and higher-level things in his industry (career). High-end scene. For example, construction worker A always works on small projects, and construction worker B often works on large projects, so the latter has relatively seen big scenes. For lawyers, having handled a case that has huge influence and attracted the attention of the world (such as the kind where the national media gathered when the trial was held) can be regarded as having seen a big scene. For civil servants, it may depend on which level of leadership you have dealt with.