Say greetings, in addition to Greetings, the most commonly used voices outside of Greetings, as long as they are friends: how's everything? Everything is good? What's UP? How is the current situation? What's new? What is new? What's how? What is busy? You can use it after any time, but more about it: how are you? How are you? Applicable to the first meeting: nice to meet you. I am very happy to see you. Suitable for those who have seen, but not familiar: nice to see you again. I am very happy to see you again. Suitable for friends who have not met: How have you been? How are you doing? Friends for a long time: Long Time No See. I haven't seen you for a long time.
