 Liu, Guan and Zhang were not active in the campaign.Instead, they were fighting remnants of the Yellow Turban rebels in the north and thus did not duel with Lü Bu, who, historically, was defeated by Sun Jian in battle.Following the death of Emperor Ling in 189, General-in-Chief He Jin summoned the frontier general Dong Zhuo from the northwest into the capital city of Luoyang.