Code block display seems a little bit weird

[WyxXu]

Why there is always an additional line？ Am I using code quote the wrong way?

[WyxXu]

Oh, I fixed it now …… It complie the return after directly.
Not familiar enough with html. May this issue could help someone.

[WyxXu]

Awesome, I can use html format in comment editor. Today is a good day. I discovered many interesting things. Thank you.

[WyxXu]

and there is the better way to quote code,