 The outsides of tombs often featured monumental brick or stone-carved pillar-gates (que 闕); an example from 121 CE appears to be the earliest surviving Chinese architectural structure standing above ground.Tombs of the Tang Dynasty (618–907) are often rich in glazed pottery figurines of horses, servants and other subjects, whose forceful and free style is greatly admired today.The tomb art reached its peak in the Song and Jin periods; most spectacular tombs were built by rich commoners.