"In the morning, the door of the library opened and all kinds of people rushed into the library. Shoulder-length hair, braided hair, bald head, divided hair, black hair and white hair ... wear leather shoes, leather shoes, high heels and short heels ... The spacious library seems a bit crowded.

When people entered the library, they took a deep breath and smiled with relief, as if the air in the closed library was very fresh all night. Then, double eyelids and single eyelids are all focused on their own goals; Rough hands, delicate hands, wide hands and slender hands all (carefully) take down the book and touch it very gently, just like touching a child's smooth face. ...

After a commotion in the library for a while, it was calm again. Occasionally, the sound of turning pages is very small, and people are completely immersed in the ocean of books ... "

Answer: People are pouring into the library, and people (of all kinds) are absorbed in reading and completely immersed in the sea of books.