He took over Zhang Zongchang's role as the warlord in Shandong Province. In autumn 1932, unified the province after defeating the rival warlord Liu Zhennian, who controlled the eastern part of the province (in particular the sea port of Yantai) and was known as the "King of Eastern Shandong ". As governor, Han was a stern disciplinarian with civil servants and the military. He had virtually wiped out banditry and traffic in narcotics in campaigns of suppression. Through commercial operations, principally in cotton, tobacco, and real estate, he grew rich and gave generously to schools, hospitals, and civic improvements.