How are pornographic websites reported online exposed by websites or TV stations?

There are many places involving the Yellow River now, such as Baoding City, Hebei Province. There is a key Xinghua building in the south of the May 19 vegetable market in Baoding, a northern city, which attracts guests with the reputation of accompanying bath. If there is an investigation by relevant personnel, it can be confirmed, such as an unannounced visit. If you go down in public, I think it will be empty.