Emperor Wu of Northern Zhou (543578), personal name Yuwen Yong, nickname Miluotu), was an emperor of the Chinese/Xianbei Northern Zhou Dynasty. As was the case of the reigns of his brothers Emperor Xiaomin and Emperor Ming, the early part of his reign was dominated by his cousin Yuwen Hu, but in 572 he ambushed Yuwen Hu and seized power personally. He thereafter ruled ably and built up the power of his military, destroying rival Northern Qi in 577 and annexing its territory. His death the next year, however, ended his ambitions of uniting China, and under the reign of his erratic son Emperor Xuan (Yuwen Yun), Northern Zhou itself soon deteriorated and was usurped by Yang Jian in 581. Yan Liben (WadeGiles: Yen Li-pen, c. 600-673), formally Baron Wenzhen of Boling, was a Chinese painter and government official of the early Tang Dynasty. His notable works include the Thirteen Emperors Scroll and Northern Qi Scholars Collating Classic Texts. He also painted the Portraits at Lingyan Pavilion, under Emperor Taizong of Tang, commissioned in 643 to commemorate 24 of the greatest contributors to Emperor Taizong's reign, as well as 18 portraits commemorating the 18 great scholars who served Emperor Taizong when he was the Prince of Qin. Yan's paintings included painted portraits of various Chinese emperors from the Han Dynasty (202 BC-220 AD) up until the Sui Dynasty (581-618) period.