Bin (), Prefect of the Palace Parks (), to conduct an investigation and capture all the conspirators. Hundreds of people were arrested and executed during this time. Yellow Rebellion When Zhang Jue heard that the Han government had caught wind about his plans to rebel, he quickly sent messengers to contact his allies throughout China and take action immediately. Sometime between 29 February and 29 March 184, Zhang Jue started the Yellow Turban Rebellion with roughly 360,000 followers wearing yellow headscarves or turbans. He called himself the "Lord General of Heaven" (), while his brothers Zhang Bao and Zhang Liang were called the "Lord General of Earth" () and "Lord General of People" (), respectively. The rebels attacked government offices, pillaged villages, and seized control of commanderies. Within 10 days, the rebellion had spread throughout China, alarming the Han imperial court in Luoyang. The rebels were mostly concentrated in the Ji, Jing, You and Yu provinces. The group led by Zhang Jue and his brothers gained their support in Ji Province, located just north of the Yellow River, near Zhang Jue's home territory of Julu Commandery (around present-day Pingxiang County, Hebei) and Wei Commandery (around present-day Handan, Hebei). A second major uprising took place in Guangyang Commandery (around present-day Beijing) and Zhuo Commandery (around present-day Zhuozhou, Hebei) in You Province. The third centre of the rebellion was in Yingchuan Commandery (around present-day Xuchang, Henan) and Runan Commandery (around present-day Xinyang, Henan) in Yu Province, and Nanyang Commandery (around present-day Nanyang, Henan) in northern Jing Province. On 1 April 184, Emperor Ling appointed his brother-in-law He Jin, the Intendant of Henan (), as General-in-Chief () and ordered him to supervise the imperial armies in suppressing the rebellion. Emperor Ling also appointed three generals – Lu Zhi, Huangfu Song and Zhu Jun – to lead three separate armies to deal with the rebels with a total of roughly 40,000 troops. Lu Zhi went for Zhang Jue's base in Ji Province, while Huangfu Song and Zhu Jun headed to Yingchuan Commandery. You Province: Guangyang and Zhuo commanderies In You Province, the rebels killed Guo Xun (), the provincial Inspector, and Liu Wei (), the Administrator of Guangyang Commandery. Zou Jing, a colonel, led imperial forces to eliminate the rebels in You Province. Liu Bei led a group of volunteers to assist him. Yu Province: Runan and Yingchuan commanderies When the rebellion first broke