This is an front page. It’s different from a blog post because it will stay in one place and will show up in your site navigation (in most themes). Most people start with an About page that introduces them to potential site visitors. It might say something like this:
Hi there! I’m a researcher in genetics, and this is my website. I live in china, and I like slience.
…or something like this:
If you like in the genetics and want to share the idea, please contact with me. My Email:email@example.com.
As a new WordPress user, you should go to your dashboard to delete this page and create new pages for your content. Have fun!