 In 1928, he plotted the notorious looting of the Eastern Mausoleum of the Manchu emperors.The tombs desecrated included that of the late Empress Dowager Cixi.In course of the Warlord Rebellion in northeastern Shandong of 1929, Sun and 7,000 soldiers under his command joined the insurgents against the Nationalist-aligned ruler of eastern Shandong, Liu Zhennian.