The phrase comes from Sima Qian's "The Records of the Grand Historian" written in 94BCE. Zhao Gao was a eunuch and hid the first Emperor's death and schemed to

The phrase comes from Sima Qian's "The Records of the Grand Historian" written in 94BCE. Zhao Gao was a eunuch and hid the first Emperor's death and schemed to have the rightful heir killed. Zhao installed a puppet and tested everyone's loyalty by declaring a stag a horse and dared anyone to question him. https://cesnur.net/wp-content/uploads/2022/07/tjoc_6_4_5_chen.pdf https://cesnur.net/wp-content/uploads/2022/07/tjoc_6_4_5_che...