That ruler, a former associate of Gaozong, conquered Koguryu in an alliance with Silla and moved the capital from Chang'an to Luoyang.
One ruler of this dynasty established a think tank called the Scholars of the Northern Gate to work around the imperial bureaucracy. That ruler, a former associate of Gaozong, conquered Koguryu in an alliance with Silla and moved the capital from Chang'an to Luoyang. Emperor Taizong secured this dynasty's northern frontier by defeating the Turks, but a rebellion by a northern Turkish general against Xuanzong ended the golden age of this dynasty also led by Empress Wu. For 10 points, name this Chinese dynasty which suffered the An Lushan Rebellion, the successor of the Sui lasting from 618 to 907 A.D.
One ruler of this dynasty established a think tank called the Scholars of the Northern Gate to work around the imperial bureaucracy.
Tang Dynasty