早上好 is how you say "good morning" in Chinese. It comes from the Chinese characters 早 (zǎo), which means "early," and 上 (shàng), which means "morning." In English, you might say "good morning" like this:

Good morning, everyone.

Here are a few more examples in English and Chinese:

Have a good morning! 早上好！

Good morning, how are you? 早上好，你好吗？

I hope you have a great morning. 我希望你早上过得很好。