Emperor Taiwu of Northern Wei
Helian Chang (; died 434), courtesy name Huan'guo (還國), nickname Zhe (折), was an emperor of the Hu Xia dynasty of China. He was the successor and a son of the founding emperor Helian Bobo (Emperor Wulie). After his father's death in 425, he tried to expand Xia further, but soon his state began to collapse in light of pressure from rival Northern Wei. In 427, his capital Tongwan (統萬, in modern Yulin, Shaanxi) fell to Northern Wei forces, and in 428 he himself was captured. Emperor Taiwu of Northern Wei did not kill him but instead treated him as an honored companion, marrying a sister to him and creating him high titles—initially the Duke of Kuaiji and later the Prince of Qin—but in 434 (after his brother and successor Helian Ding had been captured and executed, ending Xia), he tried to escape and was killed.