Oh Adam4321 I'm sorry to haven't seen your post.
Strangely I only recieved a notification from Chery some hours ago.
I Saw you managed to found the solution @cherye.
Hope you found the solution since these time adam4321. Maybe can be usefull for you chery in a near futur maybe.
The man told you to speak to a rock in an oasis. If the people left that means that you went in the good place. You arrive in a little place with water. There is some rocks, there is one who trigger an action repeat it sometimes and it will work.
I'll be more attentive to this post. I tought nobody was playing the game these times xD.
Best regards and one more time sorry for the waiting.