This famous saying is: "From my ancestors to my descendants, I have accumulated merits and credit in the third generation of Qin. Today, I have more than 300,000 soldiers. Although I am imprisoned, my power is enough to double my side. However, since Those who know that they will die and uphold their righteousness will not dare to insult the teachings of their ancestors, so as not to forget their ancestors." These two sentences mean that "I, the Meng family, have been loyal to Qin for three generations now. He still had the ability to launch a rebellion. The reason why he didn't do this was just to keep his righteousness."

Historical allusion: In 210 BC, Qin Shihuang fell ill while on tour, so he turned around and returned to Xianyang. By the time he reached the dunes, he was too ill to continue, and he died there. Before his death, Qin Shihuang left an imperial edict to let Fusu, the young master who was supervising the army in the north, ascend the throne. Unexpectedly, Zhao Gao and Li Si, who received the imperial edict, tampered with the imperial edict and promoted Hu Hai to the throne of emperor. Immediately afterwards, the two men immediately sent people to the northern border to correct Qin Shihuang's order and ordered the death of the young master Fusu and the general Meng Tian. Fusu committed suicide immediately after receiving the order. Meng Tian suspected fraud and refused to commit suicide, and was immediately taken away from the army. Eventually it came to a death sentence. After saying this, Meng Tian drank poisoned wine and died.