In 189,
Emperor Ling died, leaving his young son in the care of
Empress Dowager He and General-in-Chief
He Jin. He Jin then summoned
Dong Zhuo to lead troops into the capital to assist in a plot to eliminate the powerful
eunuch faction. Before Dong Zhuo arrived, however, He Jin was assassinated by the eunuchs and Luoyang fell into chaos following a clash between supporters of both sides. Dong Zhuo then seized military control of the capital and deposed the young emperor for the puppet
Emperor Xian. However, his tyrannical ways incurred the wrath of many and in the following year, warlords from eastern China formed a coalition against him. Sun Jian also raised an army and joined
Yuan Shu, one of the leaders of the coalition at Luyang (魯陽; present-day
Lushan County,
Henan). On his way, he killed Inspector of Jing Province Wang Rui and Administrator of Nanyang Zhang Zi. Yuan Shu appointed Sun Jian as General Who Destroys Barbarians (破虜將軍, also translated as "General Who Smashes the Caitiffs") and Inspector of
Yu Province (). Sun Jian then began training and preparing his troops at Luyang. A force sent by Dong Zhuo was so impressed with the strict discipline of Sun Jian's troops that they gave up the plan to attack Luyang. When Sun Jian moved out to Liangdong (梁東; east of present-day
Linru County, Henan), he was outnumbered by Dong Zhuo's forces. With several dozen horsemen, Sun Jian broke out of the encirclement. He took off the red felt scarf he had always been wearing and handed it to his trusted aide Zu Mao (), whom Dong Zhuo's soldiers then chased after while Sun Jian escaped. Unable to shake off his pursuers, Zu Mao then dismounted, hung the scarf onto a half-burnt pillar, and hid himself in the tall grass nearby. The enemies surrounded the pillar and approached cautiously till they realised they had been fooled, whereupon they retreated. After regrouping his troops, Sun Jian pressed his troops towards Luoyang and engaged in battle against Dong Zhuo's forces at Yangren (陽人; believed to be near present-day
Wenquan, Ruzhou,
Henan). He scored a brilliant victory and killed the enemy commander
Hua Xiong in battle (April 191). At this time, someone told Yuan Shu that if Sun Jian defeated Dong Zhuo and took over Luoyang, he would no longer submit to anyone. Feeling doubtful, Yuan Shu stopped providing food supplies to Sun Jian's army. Sun Jian rode the hundred odd
li from Yangren to Luyang overnight to see Yuan Shu, whereupon he told the latter, "I put myself in danger during battle, firstly to eliminate the villain (Dong Zhuo) for the Han Empire, and secondly to avenge the deaths of your family members. I have no personal grudge against Dong Zhuo. Yet you believe slanderous talks and suspect me!" The words put Yuan Shu to shame and he immediately ordered his men to continue delivering food supplies to Sun Jian's army. Fearing Sun Jian, Dong Zhuo then sent his general
Li Jue as an emissary to seek peace and propose a marriage to cement the alliance. However, Sun Jian rejected the proposals with harsh words and continued to lead his troops towards Luoyang. In late 190, his army was merely 90
li away from the capital when Dong Zhuo retreated west to
Chang'an after ordering the destruction of Luoyang by fire. Entering the ruins of Luoyang, Sun Jian ordered his men to reseal the tombs of Han emperors that were excavated by Dong Zhuo, after which he returned to Luyang. It was said in the
Book of Wu () by
Wei Zhao that Sun Jian found one of the emperor's jade seals in a well south of Luoyang and kept it. Later, when Yuan Shu declared himself emperor, he held Sun Jian's wife
Lady Wu hostage in exchange for the seal. ==Later life==