Emperor Renzong of Song (30 May 1010 – 30 April 1063), personal name Zhao Zhen, was the fourth emperor of the Song dynasty of China. He reigned for about 41 years from 1022 to his death in 1063, and was the longest reigning Song dynasty emperor. He was the sixth son of his predecessor, Emperor Zhenzong, and was succeeded by his cousin's son, Zhao Shu who took the throne as Emperor Yingzong because his own sons died prematurely. His original personal name was Zhao Shouyi but it was changed by imperial decree in 1018 to "Zhao Zhen", which means 'auspicious' in Chinese. Reign His father Emperor Zhenzong died in 1022 leaving Renzong who was only 12 at the time as the new emperor. His stepmother Liu was the regent since he was young. In 1027, he was old enough to rule on his own but Liu refused to step down and ruled until her death. Compared to other famous Chinese emperors, Emperor Renzong was not widely known. His reign marked the high point of Song influence and power but was also the beginning of its slow disintegration that would persist over one and a half centuries. One possible reason behind its weakness was its interpretation of its own foreign policy. The official policy of the Song Empire at the time was of pacifism and this caused the weakening of its military. The Tangut-led Western Xia state took advantage of this deterioration and waged small scale wars against the Song Empire near the borders. In 1038, the Tangut chieftain Li Yuanhao named himself emperor of Da Xia and demanded Emperor Renzong recognise him as an equal. The Song court recognised Li Yuanhao as governor but not as "emperor", a title it regarded as exclusive to the Song emperor. After intense diplomatic contacts, in 1043 the Tangut state accepted the recognition of the Song emperor as emperor in exchange for annual gifts, which implied tacit recognition on the part of the Song of the military power of the Tanguts. When Emperor Renzong came to power, he issued decrees to strengthen the military and paid massive bribes to the Khitan-led Liao dynasty, an adversary of Western Xia, in the hope that this would ensure the safety of the Song Empire. However, these policies involved a heavy price. Taxes were increased severely and the peasants lived in a state of perpetual poverty. This eventually