In early 211, Cao Cao ordered Zhong Yao and Xiahou Yuan to lead an army to attack Zhang Lu in Hanzhong and they were due to pass through the Guanzhong region along the way.
Cao Cao ordered Zhong Yao and Xiahou Yuan to lead an army to attack Zhang Lu in Hanzhong. This was in early 211. They were due to pass through the Guanzhong region along the way. This was in early 211.