He vehemently opposed Nanyue's submission to the Han dynasty and criticized Zhao Xing on numerous occasions, though his outcries were ignored. Lü decided to begin planning a coup and feigned illness to avoid meeting the emissaries of the Han court. The emissaries were well aware of Lü's influence in the kingdom – it easily rivalled that of the king – but were never able to remove him. Sima Qian recorded a story that the Queen Dowager and the Zhao Xing invited Lü to a banquet with several Han emissaries where they hoped to find a chance to kill Lü: during the banquet, the Queen Dowager mentioned that Prime Minister Lu was against Nanyue submitting to the Han dynasty, with the hope that the Han emissaries would become enraged and kill Lü. However, Lü's younger brother had surrounded the palace with armed guards, and the Han emissaries, led by Anguo Shaoji, didn't dare attack Lü. Sensing the danger of the moment, Lü excused himself and stood to leave the palace. The Queen Dowager herself became furious and tried to grab a spear with which to kill the Prime Minister personally, but she was stopped by her son, the king. Lü Jia instructed his brother's armed men to surround his compound and stand guard and feigned illness, refusing to meet with King Zhao or any Han emissaries. At the same time, be began seriously plotting the upcoming coup with other officials. When news of the situation reached Emperor Wu, he dispatched a man named Han Qianqiu with 2,000 officials to Nanyue to wrest control from Lü Jia. In 112 BC the men crossed into Nanyue territory, and Lü Jia finally executed his plan. He and those loyal to him appealed to the citizens that Zhao Xing was but a youth, Queen Dowager Jiu a foreigner who was plotting with the Han emissaries with the intent to turn the country over to Han China, giving over all of Nanyue's treasures to the Han Emperor and selling Yue citizens to the Imperial court as slaves with no thought for the welfare of the Yue people themselves. With the people's support, Lü Jia and his younger brother led a large group of men into the king's palace, killing Zhao Xing, Queen Dowager Jiu, and all the Han emissaries in the capital. After the assassinations of Zhao Xing, the Queen Dowager, and the Han emissaries, Lü