Okay, so imagine you have a bunch of different kinds of jobs. Some people are doctors, some are teachers, some are firefighters, and so on. Just like in America where we have titles for these jobs (like "Doctor" or "Teacher"), China has titles too.
But in China, there are lots and lots of different titles! Some of them are for government officials or leaders, like "President" or "Prime Minister". Others are for teachers, like "Professor". There are also titles for important businessmen and women, like "CEO".
Now, the thing about Chinese titles is that they often include a lot of information about who the person is and what their job is. For example, let's say there's a person with the title "Director General of the Department of Education". That's a really long title! But it tells you a few things. First, it tells you that this person works for the government--they're a director general. Next, it tells you that they work in the Department of Education--that's where they're in charge.
So, when you hear someone's title in China, it's like getting a mini description of who they are and what they do. It can be really helpful for understanding how important someone is or what their job is. But, because there are so many different titles, it can also get pretty confusing!