Many Chinese learners first learn 你好 (nǐ hǎo), which means "hello." You can use it when you meet someone for the first time, or in a more formal situation. But with friends, classmates, or coworkers, people often say something more natural instead. Tap the speaker icon next to each example to hear it.
So 你好 is useful, but it's not the only way to say hello. In real life, a small question — like asking if someone has eaten, or where they're headed — can make your Chinese sound warmer and more natural, even though it doesn't need a literal answer.
Taiwan and Mainland China share some of these greetings, like 嗨 and 早, but each place also has its own flavor — 吃飯了嗎 and 你要去哪裡 feel very Taiwanese, while 最近怎麼樣 is more commonly heard in Mainland China. Listening for these small differences is a great way to sound more like a local wherever you are.