What are some funny things that foreigners don't understand about China?

chatting with a foreign friend, who is from Estonia. I said I like watching American dramas, but I don't like watching domestic dramas or anything like that. He said, I heard that there was a month recently, and it was quite popular. I don't know how this product knows. So I made a lot of nonsense, which generally means that it is not good-looking, plus what clothes are unreasonable and what I said is not in line with the speaking habits at that time. He said, if that's the case, it means that the director and the like are not careful. I said, yes, but after all, it was more than 2, years ago, and the director may be too lazy to check it carefully. He froze on the spot, thought for a long time and asked me, Do you still know how your ancestors dressed 2 years ago? I nodded, "Yes, we also recite poems more than 3, years ago".