《资治通鉴·晋纪·晋纪四》
于是，太保主簿刘繇等人手执黄旗，敲响了登闻鼓，向惠帝陈诉说： 当初，诈称皇帝命令的人到了，卫立即奉送了印音绶带、单人独车地听命于人。
于是太保主簿刘繇等执黄幡，挝登闻鼓，上言曰： 初，矫诏者至，公即奉送章绶，单车从命。
So, the Grand Protector's secretary Liu Yao and others held up yellow flags and beat the bell of complaints. They stated to Emperor Hui: At that time, when the people pretending to have the emperor's orders came, Wei offered up the imperial insignia and went to serve submissively in a small carriage all by himself.