당 현종
Yan (), also known as the Great Yan (), was a state established in 756 by the Tang Dynasty general An Lushan, after he rebelled against the reign of Emperor Xuanzong of Tang in 755. The state was extinguished in 763, with the death of An Lushan's former subordinate, Shi Siming's son, Shi Chaoyi, who was the last person to claim the title as Yan's emperor.