Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Fawad Khan
Table title:
Films
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Director </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><th colspan=1 rowspan=1 > Khuda Kay Liye </th><td colspan=1 rowspan=1 > Sarmad </td><td colspan=1 rowspan=1 > Shoaib Mansoor </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><th colspan=1 rowspan=1 > Khoobsurat </th><td colspan=1 rowspan=1 > Vikram Singh Rathore </td><td colspan=1 rowspan=1 > Shashanka Ghosh </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=3 > 2016 </td><th colspan=1 rowspan=1 > Ho Mann Jahaan </th><td colspan=1 rowspan=1 > Rafael </td><td colspan=1 rowspan=1 > Asim Raza </td><td colspan=1 rowspan=1 > Cameo appearance </td></tr>
<tr> <th colspan=1 rowspan=1 > Kapoor & Sons </th><td colspan=1 rowspan=1 > Rahul Kapoor </td><td colspan=1 rowspan=1 > Shakun Batra </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Ae Dil Hai Mushkil </th><td colspan=1 rowspan=1 > DJ Ali </td><td class="highlighted"  colspan=1 rowspan=1 > Karan Johar </td><td colspan=1 rowspan=1 > Extended Cameo </td></tr>
<tr> <td colspan=1 rowspan=1 > 2018 </td><th colspan=1 rowspan=1 > Jawani Phir Nahi Ani 2 </th><td colspan=1 rowspan=1 > Tipu Shah </td><td colspan=1 rowspan=1 > Nadeem Baig </td><td colspan=1 rowspan=1 > Cameo </td></tr>
<tr> <td colspan=1 rowspan=2 > 2019 </td><th colspan=1 rowspan=1 > The Legend of Maula Jatt </th><td colspan=1 rowspan=1 > Maula Jatt </td><td colspan=1 rowspan=1 > Bilal Lashari </td><td colspan=1 rowspan=1 > Post-production The trailer is launched on 21 Dec </td></tr>
<tr> <th colspan=1 rowspan=1 > Parey Hut Love </th><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Asim Raza </td><td colspan=1 rowspan=1 > Special appearance </td></tr>
</table>
Question:
How did Khan and Karan Johar work on a project together in 2016?
Answer:
In 2016, Khan appeared in Karan Johar's film, Ae Dil Hai Mushkil.