I'm Chinese living in mainland China, I actually don't know how and why I came here. But since I already am here, Let me try to answer it.
https://en.wiktionary.org/wiki/%E4%BD%A0%E5%A5%BD
In Chinese, 你好 actually has a common usage with Hello in English, it will be used by the time you want to say hi to people. But the difference between them is, I don't think Hello has a specific meaning in English, but 你好 in Chinese do have a specific meaning. To understand this better, you must know this first, in Chinese, every single word in chinese hold a specific meaning.