Welcome to hive @tunduyutung !! this is @macchiata from the @OCD team.
You can explore the communities that are suitable for your content. You can read some of the communities in this post that is included in OCD incubation community incubation list
For tips and information as a Hive newbie, click here: newbie guide.
The important thing is Hive is a bit different from other social media platforms since you are monetizing your blog. You can't include content that you don't own without sources. For more information, check this post: Why and How People Abuse and Plagiarise.
If you have questions or concerns, you can hop into OCD's Discord server and we'll gladly answer your questions.