857 network buzzwords refer to empty ears in the chorus of Divine Comedy bowchibow and feelmybass, and now they have become synonymous with disco. 857 means going out to disco at eight o'clock in the evening, coming back at five o'clock in the morning and going seven times a week. 857 also refers to a disco song, because there are no lyrics, so I think it is 857. 857 got angry because novel coronavirus stayed at home for a long time and longed for disco dancing. 857 refers to a disco song of disco. 857 is not the title of the song, but the homophonic content of disco. Because there are no lyrics, I think it is 857. In fact, it is a set of numbers, consisting of three Arabic numerals: 8, 5 and 7, which are relatively large numbers less than 900 and greater than 800. As for other meanings, it depends on what people pay for it. For example, if it is a code, it will become a code.

Library 857 probably means dancing in the library?