After one of the tours, Zhao Gao suggested he examine the governors and military commandants and punish those guilty of some crime. By doing so he could do away with those who disapprove of the emperor's actions. Six imperial princes were killed at Tu (杜). The emperor then went on further to punish people for petty crimes. The emperor's brother Jianglu (將閭) and two other brothers were imprisoned. A messenger was then sent to read them a death sentence. Jianglu looked to the heavens, and cried out loud three times that he did not commit any crime (天乎! 吾無罪!). All three brothers cried and drew their own swords to commit suicide. Zhao Gao said that the Second Emperor was young, and as the Son of Heaven, his own voice must never be heard and his face must never be shown. Accordingly, the emperor remained in the inner palaces, and consulted only with Zhao Gao. Because of this, the high ministers rarely had the opportunity to see the emperor in court.