What is the two-part allegorical saying that Lu Bu killed Dong Zhuo?

Lyu3 bu4 killed Dong Zhuo, putting righteousness above family interests.

Lu Bu, also known as Fengxian, was born in Jiuyuan County, Wuyuan County. He was a famous soldier in the late Eastern Han Dynasty and one of the heroes in the late Han Dynasty. He was successively the ministry of Ding Yuan and Dong Zhuo, and later joined forces with Stuart Wang Yun to kill Dong Zhuo. He was defeated by Dong Zhuo's old staff, Li Jue, and joined Yuan Shao. After failing to compete with Cao Cao for Yanzhou, Lu Bu took Xuzhou and divided the world. In December of the third year of Jian 'an, Lu Bu was defeated and executed by Cao Cao.

Dong Zhuo, named Zhongying, was born in Lintao, Longxi, Liangzhou (now Min County, Gansu Province). He was a warlord and a powerful minister in the late Eastern Han Dynasty. Dong Zhuo served as the secretariat of Bingzhou in the last years of Emperor Huan, taking advantage of the war at the end of the Han Dynasty and the weakness of the imperial court to occupy the capital, abolishing the organizational system and holding Emperor Han Xian hostage. Since then, the Eastern Han regime has existed in name only. His vicious nature and numerous crimes led Dong Zhuo to be crusaded by other warlords in China. Dong Zhuo himself was designed to punish the DPRK-China ministers and their subordinates. After his death, Li Jue and Guo Si fought with each other to control state affairs, and both the emperor and the court were forced to be displaced. The shepherds, satraps and occupied territories in various places were completely out of central control, thus opening the Three Kingdoms era.