Well, it is generally impossible for libraries to purchase books one by one, but publishers provide bibliographies. Of course, the library itself will also put forward its own demand for books, but this ratio is usually not too large. And now some libraries will get a demand form at the service desk, where readers can write down the books they want to read, and then the library will consider buying them, so it is estimated that there are some romance novels, but the proportion should be very small.