Yang Guozhong () (died July 15, 756), né Yang Zhao (), was a Chinese politician who served as leading chancellor from 752 to 756, late in the reign of Emperor Xuanzong of Tang. Yang was a gambler and wastrel but rose rapidly to political power after his distant cousin, Yang Yuhuan, became Emperor Xuanzong's favorite consort in 744. His skills as a financial administrator helped him become leading chancellor in 752, but while he enjoyed Emperor Xuanzong's trust, he proved disastrously incompetent and incurred the wrath of many, including the general An Lushan, another imperial favorite. Yang was blamed for precipitating An's cataclysmic rebellion in 755. In the following year, he forced the Tang army of Geshu Han, then holding favorable defensive positions in Tong Pass, to confront the rebel army, leading to a rout of Tang forces and the fall of the imperial capital, Chang'an. Yang attempted to flee to his base in Chengdu with Emperor Xuanzong, but when the imperial party stopped at Mawei Station in modern Shaanxi, Yang and his family, including Yang Yuhuan, were massacred by imperial guard soldiers who blamed them for the chaos. Background It is unknown when Yang Zhao was born. His family was from Pu Prefecture (蒲州, roughly Yuncheng, Shanxi) and traced its ancestry to the great Han dynasty official Yang Zhen (), as well as officials of Later Yan, Northern Wei, and Sui dynasty. Yang Zhao's great-great-grandfather Yang Wang () was an important official during Sui. His grandfather Yang Youliang () served as a county magistrate for Tang, and his father Yang Xun () served as a military officer. His mother Lady Zhang was a sister of Wu Zetian's lovers Zhang Yizhi and Zhang Changzong. Yang Zhao himself was said to lack knowledge and virtues. He was a heavy drinker and gambler, and was looked down upon by his own clan members. Motivated by this slight, Yang decided to join the army, and ended up serving in the army stationed at Yi Prefecture (益州, roughly modern Chengdu, Sichuan). For his military service, he was set to be promoted, but the secretary general of Yi Prefecture, Zhang Kuan (), disliking him, initially refused to do so and in fact whipped him, but eventually he was made the magistrate of Xindu County. After his three-year term of service was over, he did not save sufficient funds to return home, and relied on assistance