Liu Ruyi was finally poisoned by Lv Hou. As we all know, the original match of Liu Bang, the founding emperor of the Han Dynasty, was Lv Zhi. However, compared with, Liu Bang loves Mrs Qi and other concubines more. And Mrs Qi gave birth to a son named Liu Ying and Liu Ruyi for Liu Bangsheng. Among them, Liu Ying was not very popular with Liu Bang, but because of his eldest son's identity, he was conferred the title of Crown Prince in 202 BC. Although Liu Ruyi was neither the eldest son nor the second son, he was very popular, and was made acting king in 200 BC.

That is to say, after Liu Ying was made a prince, Mrs. Qi, out of love for her, repeatedly encouraged Liu Bang to replace Liu Ruyi with Chu Jun. This made the Empress Lu, who was jealous of Mrs. Qi's favor, more and more jealous of Mrs. Qi. Although Liu Bang did try to change the choice of the prince, he failed to put it into practice because of the opposition of Lv Hou and some courtiers. Liu Bang also knew that Mrs. Lv Hou was disgusted with Liu Ruyi, so after the failure of changing the prince, he chose a prime minister's escort for Liu Ruyi, that is, Zhou Chang. However, the Prime Minister's bodyguard failed to help Liu Ruyi avoid Lv Hou's murder as expected by Liu Bang, so Liu Ruyi was finally poisoned in BC 194.

After Liu Bang's death, Liu Ying succeeded to the throne as emperor, and at the same time, Lv Hou began to proclaim himself emperor. The ruling party launched a series of revenge actions against Liu Bang's concubines, especially against Mrs. Qi, who was her most jealous. As far as Mrs. Qi is concerned, she was first locked up in Yongxiang and asked to do hard labor. During this period, she has been asked to wear a bald head, a hoop around her neck and a red prison uniform to show off. While taking this opportunity to humiliate Mrs Qi, she also summoned Liu Ruyi many times to try to kill her. However, due to the maintenance of Zhou Chang and Liu Ying, Lv Hou didn't find the starting opportunity at first.

From BC 194 to BC 12, Liu Ying, Liu Ruyi, lived and ate with Liu Ruyi and hunted in the palace. At that time, Liu Ruyi was too young to get up and go together. When Lv Hou heard the news, he immediately seized the opportunity and sent someone to poison Liu Ruyi. After killing Liu Ruyi, he sent someone to cut off Mrs Qi's hands and feet. In addition, Mrs. Qi's eyes, ears and throat were dug out, deaf and poisonous. Mrs. Qi, who was tortured to death, put her in the toilet again.

This cruel means was hard for Liu Ying to accept, so he was led to see Mrs Qi's misery once, and then he was depressed. In this case, he became more and more careless politically, so the power of North Korea was more firmly in the hands of Lv Hou.