LOL 消息 this Word first appeared in the book of change，it means “变化change”，including “happen，develop and end”。 in modern times，消息 became “news”or“information”

消息=音信 音=声音 voice 信=信件 letter The origin of the word 消息， origin as word音信

天啊，你好会拆字。不过我想的跟你的不同。“消息”一般是从一个人脑里转移到另一个人脑里，所以就把“消息”物化，将“消息”想象成一种实体。“消息”不就是一种知识吗？把“消”字理解成动词，“消”将一个人脑中的知识溶化，消解成像气“息”一样的东西，传到另一个人的脑子中，就是“消息”了。

It probably could be traced back to 易經：...天地盈虛，與時消息... This is interesting, I found an online dictionary and both words' original meanings: 消：originally indicates the situation that a river becomes a stream, then it has developed other meanings, like "digest", "eliminate" 息：like what you've already known, means "breath", also "rest", "growing", like 修養生息 I guess it means how things "grow with time", like moon, plants, etc. Then it is also a noun now

Hello！It's my first time use italki. I'm glad that I can answer your question. First,the word "消息" first appeared in the Book of changes. The mean of the word "消" is death or disappear.The mean of the word "息" is growing or appear.The word"消息" is the objective world's occurrence, development and outcome.It includes objective law of the world. As time goes on,Gradually "消息" become a kind of fixed news content.So "消息" also called"news"