- Add Avatar: Add a .png file after the "avatar" field. This will only work if you change the "url:" 
              in the "#Basic Site Settings" to your own GitHub link.

- Add GitHub Link: Update the "github" field with your GitHub username (just the username, no link needed).

- Cancel Title: The title can be found in the "#Basic Site Settings" under the "title" field. 
                I didn't remove it because it helps people easily navigate back to your homepage.

- Remove Unwanted Navigation: You can delete any navigation items you don't want here. 
                              You can also reorder the navigation or add new items.

- Remove "FEED": I have only commented out the "FEED" code instead of deleting it, 
                 so you can uncomment it whenever you need to.

- Add CV.pdf to Navigation: First, choose /cv/ instead of /cv-json/ in the "_data/navigation.yml". 
                            Then, add the following code to the cv.md:

                            <embed src="/files/CV_ShengyuLi.pdf" width="900" height="1000" type='application/pdf'>

                            I have also added a "Download CV as PDF" button at both the top and bottom of your CV.