Confusing wrapAll in jQuery

I have several p inside several li as below and also as https://jsfiddle.net/y5zn538e/

<ul>
  <li>
    <p> Hello 1</p>
    <p> Hello 2</p>
    <p> Hello 3</p>
  </li>
  <li>
    <p> Hello 4</p>
    <p> Hello 5</p>
    <p> Hello 6</p>
  </li>
</ul>

I want to wrap a div such that it wraps like the 2nd below

<ul>
  <li>
    <p> Hello </p>
    <div>
      <p> Hello </p>
      <p> Hello </p>
    </div>
  </li>
  <li>
    <p> Hello </p>
    <div>
      <p> Hello </p>
      <p> Hello </p>
    </div>
  </li>
</ul>

I tried like below:

 $('ul li >p:not(:first-child)').wrapAll('<div></div>'); 

However, that seem to not working.. I mean all it does it take all p and wrap it. I want to be wrapp a div inside each li ?

The problem is, li > p:not(:first-child) it collects all child p tags except the first child.

so You need to use .each() function iterate to all li.

$('ul li').each(function(){
  $(this).find('p:not(:first-child)').wrapAll('<div></div>'); 
});

  $('ul li').each(function(){
     		$(this).find('p:not(:first-child)').wrapAll('<div></div>'); 
     });

div{
  color: red;
  }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
      <li>
         <p> Hello 1</p> 
         <p> Hello 2</p > 
         <p> Hello 3</p> 
      </li> 
      <li>
         <p> Hello 4</p> 
         <p> Hello 5</p > 
         <p> Hello 6</p> 
      </li> 
     </ul>