How to switch to an empty tag in the text?

Suppose there is a list

the <ul>
the <li>
the <ul>
the <li>question</li>
the <li>answer</li>
</ul>
</li>
the <li>
the <ul>
<p></li>
<p></li>
</ul>
</li>
the <li>
the <ul>
<p></li>
<p></li>
</ul>
</li>
 </ul>

And need using hot keys to move to the next empty tag. Earlier in the Windows, it was the combination of
ctrl+alt+up/down, now in Ubuntu it doesn't work.
Searched through the config hot keys, but found none.
Someone tell me how that command is called?
Thanks in advance.