Han was particularly powerful after the general Hulü Guang was falsely accused of treason and executed in 572, and he, Mu, and Gao Anagong were referred to as the "Three Nobles," controlling the government together, and they were later blamed for the deterioration of Northern Qi.
Han's power grew substantially after General Hulü Guang was unjustly condemned for treason and executed in 572. He, along with Mu and Gao Anagong, earned the title of "Three Nobles" due to their joint leadership, but they were later blamed for Northern Qi's downfall.