Informal way of saying hello? Is there a more informal way than the standard 你好 to say "hi" or "wazzup" when meeting friends or equal age people of the same age, or is 你好 always appropriate?
You can say ‘嗨’, which is equivalent to ‘hi’ in English or ‘哈咯’ which translates to ‘hello’ or even ‘哟‘ like another user had mentioned in the comments.