Fa Zheng turned around and handed over all the documentation about this matter to Chen Gong, and then the entire Lyu Bu's army sprang into action.
How to put it, it was advantageous, easy, and just; carrying out the task naturally didn't involve any psychological pressure. Even the always orthodox and doctrinal Gao Shun, after reading those incriminating documents, experienced no qualms about clamping down on the fleeing aristocratic clans. Leading half of the Vanguard Camp with their astonishing mobility, they began fervently striking at the aristocratic clans escaping southward.
As for Zhang Liao, he mainly dealt with aristocratic clans advancing northwards, while Lyu Bu handled those moving westwards.