Duan , at that time , was the second largest city in Zheng , and was a very important fortress indeed .
First she asked Zheng to give Gongshu Duan the city of Duan as a fiefdom .
Duan , at that time , was the second largest city in Zheng , and was a very important fortress indeed .
First she asked Zheng to give Gongshu Duan the city of Duan as a fiefdom .