Language is the symbol of social life, and popular words reflect the times. Recently, after public solicitation, expert selection, media voting and other links, the editorial department of Chewing Word released the list of "Top Ten Hot Words in 20 19", "Mutual Learning of Civilizations" and "Blockchain", which aroused widespread concern among netizens.

"Time goes by, the seasons turn", and time keeps leaving "scars" on the language. New expressions, new sentences and new rhetoric inject vitality into the open language system, and some even precipitate into common words. On the other hand, however, some of them have limited connotations. After being busy in cyberspace and entertainment culture for a period of time, they can't escape the fate of "coming in a hurry and going in a hurry". Precipitation and loss are natural processes of language evolution.

Catchwords are not only a linguistic phenomenon, but also a social phenomenon, which includes both personal expression and grand narrative. From a larger perspective, just as China advocated "blockchain" as an important breakthrough in scientific and technological innovation, and "mutual learning of civilizations" announced exchanges and dialogues to the world, the changes of buzzwords were accompanied by the pace of national development and social progress.