Mongolian Aobao - Aobao Is Actually The Mongolian Stone Piles Or Heaps For Worship. If You Have An Opportunity To Visit Inner Mongolia You Will Be Impressed By The Pillbox-shaped Heaps That Stand Singularly Or In Clusters On The Grassland. The Local People Call Them 'Aobao', And They Are Built Of Stone In Areas Where Stone Abounds, And Sand And Earth Are Encircled With Willow Branches Where There Is No Stone Photo