YouTube Question How do you set up a blue title with #?

[sleeping]

I found that the video titles of many friends are as follows:

The first line is blue character with #.

The second line is the video theme.

Who can tell me how it was made?

Thank you very much!

 

[CristianFilingeri]

Hi Sleeping, I do this too in my channel by simply adding Hashtags in the video description.
Only the first 3 will be shown over the video title
For instance, #fishing #tutorials #video

 

[sleeping]

I tried to use #，but I don't know why, the line with # doesn't appear in the first line alone like your video title.I went to see your video just now.but I cannot understand your language.Would you tell me which language do you speak?