How to do the World of Warcraft conquest mission?

The way to conquer World of Warcraft is as follows:

1. First talk to Creff and accept the conquest task, as shown below:

2. Next, you need to go to the red circle in the figure, as shown in the following figure:

3. Click to purify the trampled bones on the ground, as shown in the figure below:

4. Finally, you can return to the dialog box to complete the task, as shown in the following figure: