 When Wu Shaocheng grew ill in 809 and fell unconscious, his servant Xianyu Xiong'er (), forged an order in Wu Shaocheng's name recalling Wu Shaoyang to serve as deputy military governor.Wu Shaoyang put Wu Shaocheng's son Wu Yuanqing () to death and took over the circuit.After Wu Shaocheng died around the new year 810, Wu Shaoyang claimed the title of acting military governor.