It is rumored that some of the survivors of Crassus's army ended up in China.[44] In the 1940s, Homer H. Dubs, a professor of Chinese history at the University of Oxford, suggested that the people of Liqian were descended from Roman soldiers taken prisoner after the battle. These prisoners, Dubs proposed, were resettled by the Parthians on their eastern border and may have fought as mercenaries at the Battle of Zhizhi, between the Chinese and the Xiongnu in 36 BC. Chinese chroniclers mention the use of a "fish-scale formation" of soldiers, which Dubs believed referred to the testudo formation.