Shi Chaoyi
At this time, Shi was described as cruel and prone to kill, terrorizing his army. He favored Shi Chaoqing over Shi Chaoyi and considered creating Shi Chaoqing crown prince and killing Shi Chaoyi. In spring 761, Shi Siming began another attempt to attack Shan Prefecture, wanting to attack Chang'an. He had Shi Chaoyi serve as his forward commander, but Shi Chaoyi was repeatedly repelled by the Tang general Wei Boyu (). Shi Siming was angered by Shi Chaoyi's failures and considered punishing him and the generals below him. On 18 April, Shi Siming had ordered Shi Chaoyi to build a triangular fort with a hill as its side, to store food supplies, and ordered that it be completed in one day. Near the end of the day, Shi Chaoyi had completed it, but had not plastered the walls with mud, when Shi Siming arrived and rebuked him for not applying mud. He ordered his own servants to stay and watch the plastering. He then angrily stated, "After I capture Shan Prefecture, I will kill you, thief!" That night, Shi Chaoyi's subordinates Luo Yue () and Cai Wenjing () warned him that he was in dire straits—and that if he refused to take action to depose Shi Siming, they would defect to Tang. Shi Chaoyi agreed to take action, and Luo persuaded Shi Siming's guard commander General Cao (personal name lost to history) to agree with the plot. That night, Luo led 300 soldiers and ambushed Shi Siming, binding him and then beginning a return to Luoyang with the troops. On the way back to Luoyang, Luo feared that someone might try to rescue Shi Siming, and so strangled him.