What is the disaster of party struggle in the Eastern Han Dynasty?

Yan Xi nine years (166), eunuchs Zhao Jin, Hou Lan and other henchmen collaborated with Zhang Fan, Xu Xuan and others to commit crimes intentionally before the Amnesty, hoping to escape punishment. However, officials Cheng Tang, Chao Zhai, Herry Liu and Huangfu were not afraid of powerful people, and they still dealt with these people according to law after the amnesty. Eunuchs and others advised Emperor Huan, who took these officials seriously. Qiu Xiaofan and Sikong Liu Mao, two important officials in the development of North Korea, gave advice to Emperor Huan. Emperor Huan was very unhappy. Liu Mao dare not say more. Chen Fan wrote a separate letter, citing the example of Shentu Jia summoning and illegally chasing Princess Huyang in the early Han Dynasty, defending the punished officials and demanding that Emperor Huan "cut off the source of learning politics" in order to eliminate the unhealthy trend of eunuch chaos. Emperor Huan ignored him, and eunuchs and others were more afraid of literati. Although they didn't dare to hurt the famous minister Chen Fan, they retaliated against others. Most of the ministers, local officials and ordinary people in the DPRK sided with the scholars and accused the eunuchs of being chaotic, evil and refusing loyalty. As a result, they were dismissed one after another. Cheng Tong, Herry Liu and others were eventually killed in prison, while CenYun and others escaped. Yin, from Henan province, executed Zhang Cheng's son who had intentionally killed before the pardon. Zhang became a henchmen's henchmen, so the eunuch party asked Rizo's disciples to write a letter in prison, accusing others of "raising scholars in the imperial examinations, making friends with students from various counties, and driving each other away, * * * being the party, condescending, and suspicious of customs". The contradiction between literati and eunuchs broke out here. Emperor Huan was furious, told the world, and arrested and tried his henchmen. Senior officials such as Qing Du Mi, Sean and scholars such as Chen Ya and Fan Pang are wanted. Qiu Chenfan thought that the charges were unclear and refused to sign the imperial edict. Seeing that the imperial edict could not take effect, Emperor Huan simply skipped the judicial process and directly let the eunuch in charge of Beisi prison hear the case. Mars, Chen Mao, Fan Pang and others generously went to prison and were tortured by Miki without changing their minds. Most of the people arrested at that time were world celebrities and recognized as "sages" by the people. General Huang of Du Liao was ashamed of being arrested for not being listed as "party member". He wrote, "I should sit on it" and asked Emperor Huan to be punished together. Emperor Huan ignored him. Chen Fan wrote another letter, admonishing Xia, Shang and Zhou, with fierce words. Emperor Huan suspected that he was talkative, and on the grounds that Chen Fan was not good at promoting talents, he was relieved of his position as Qiu, and was replaced by Guang Luxun. Liu Mao, a Sikong, was dismissed from office, and Guang Luxun called him Sikong. At the end of the Eastern Han Dynasty, Dou Wu, the father of Queen Dou, was appointed as the captain of the city gate. He was listed as the third monarch, sympathizing with the soldiers of the Eastern Han Dynasty, and wrote a letter the following year (167). At the same time, Wang Fu, the eunuch in charge of hearing the case, and others were moved by party member's words and cancelled their torture. Mars and others deliberately gave up eunuchs' children in prison. The eunuchs were afraid of implicating themselves, so they advised Emperor Huan that it was time for an amnesty. So in June of the same year, Gengshen Day was changed to Yuan Yongkang, and the country was granted Amnesty. Party member and others were released, but they were released to the fields and ousted for life, which is called "the disaster of the first party's occlusion" in history.