What is the "Great Qin First God of War Guo Kai"?

In the late Warring States period, there were four of the most bullish generals, Bai Qi and Wang Qi of the State of Qin, Lian Po and Li Mu of the State of Zhao, and two of the four famous generals of the State of Qin; according to normal procedures, the State of Zhao should be the strongest of the Six Kingdoms, and it would not be the first to perish, but the two famous generals were all killed by one person, resulting in the inability of the State of Zhao to resist the State of Qin and eventually destroy the country.

In 244 BC, after King Xiang of Zhao succeeded to the throne, he appointed Le Cheng to replace Lian Po's position as the lord general, causing Lian Po's dissatisfaction. Lian Po then led his private forces to attack Le Cheng, who was forced to flee, and Lian Po absconded to the Wei capital of Daliang (大梁, in modern Kaifeng, Henan) because of his guilt. Because the State of Zhao was repeatedly attacked by the State of Qin, there was a lack of excellent generals in the country, and King Xiang of Zhao also wanted to recall Lianpo. King Xiang of Zhao then sent emissaries to meet with Lian Po to see if he could be used by the State of Zhao.

However, Guo Kai, the favored minister of King Zhao, had a personal vendetta against Lian Po, and feared that Lian Po would return to his detriment, so he bribed the emissaries and asked him to slander Lian Po in front of King Zhao. When the emissary met with Lian Po, Lian Po ate a bucket of rice and ten pounds of meat at a meal, and then put on his armor and horse to show that he was in good health and could be used by King Zhao.

Because the emissary accepted a bribe from Guo Kai, he said in return to King Xiang of Zhao: "Although Lian Po is old, the amount of food has not decreased, but when he met with his courtiers, he went to the toilet three times in a short time. King Xiang of Zhao thought that Lianpo was old and useless, and he would not recall it again, and finally Lianpo died elsewhere.

In 229 BC, the King of Qin ordered Wang Qi and Yang Duan to lead an army to attack the State of Zhao, and the King of Zhao moved Li Mu to be the main general and Sima Shang to lead the army to meet the enemy.

Wang Qi was afraid of Li Mu's military talents, so he sent emissaries to bribe Guo Kai with heavy gold. Guo Kai collected the money and went to work, rumoring to the King of Zhao that Li Mu and Sima Shang were going to rebel, and was ready to attack and destroy the State of Zhao with the Qin army.

King Zhao was also an asshole, so he ordered Zhao Liang and Yan Ju to take li mu and Sima Shang's place. Because Li Mu was reluctant to give up the throne out of loyalty to the country, he was killed as a result. Therefore, Wang Qi led an army to attack the State of Zhao, killed Zhao Liang, and captured King Qian of Zhao and Yan Ju.