The enmity of the two brothers, Yang Jiulang and Zheng Ling can be put down, but their eleven children will not agree, not to mention, they themselves can't let go, moreover, Yang Wenguang as a reinforcement, and the Western Xia began a cruel battle, the Western Xia dispatched a million troops this time, if it were not for Yang Wenguang to arrive in time, the border defense line would have been breached, and the consequences can be imagined, the Great Song Dynasty and the Western Xia have been at war for three months, and it is already autumn at this time.

Wolf Prefecture left Zheng Ling in charge, and invited Gongsun Ce, Lao Taijun and Mu Gui Yingbang to help Zheng Ling take care of it, so he took eleven children and 1,000 soldiers of the Black Cavalry Battalion to Yang Wenguang's border garrison...... Dashun City marches.

Dashun City is a border city that was secretly built in only ten days by the third uncle Fan Zhongyan, and enjoys a high reputation in history and has strong practical value in war

Dashun City is located on the west side of the intersection of West Blacksmith Ditch and Zhaoguai Ditch in Shanzhuang Township, Huachi County, Qingyang City, Gansu Province, modern China. According to the "Reading History Fangyu Minutes - Shaanxi": "Dashun City, one hundred and fifty miles northwest of the house. "History of the Song Dynasty": The city's original name is Mapu Village, when the Houqiao Chuankou, in the belly of the Xia people. In the first year of Qingli, Fan Zhongyan knew Qingzhou, which was called Yan'an West, Qingyang East, Zhongjintang, White Leopard, and Houqiao Sanzhai, and took the place that could be attacked, and it was here. Because of the name Dashun given by Qiaochuan after the city, Dashun City and the white leopard and Jintang did not dare to commit it, and it was less of a disaster. After three years of peace, the Xia people Kou Dashun City was defeated by the Song army, and Kou Rouyuan retreated to Jintang. "Jin Zhi" Anhua has two cities, White Leopard and Dashun. Yuan waste. "The strategic location and construction time of Dashun City, Gu Zuyu recorded it very accurately, but he got the direction of Dashun City wrong, Dashun City is in the northeast of Qingyang Mansion, not the northwest, and the northwest of Qingyang Mansion is Huanzhou. At that time, the Northern Song Dynasty and the Western Xia war continued, Fan Zhongyan served as the military commander of Huanqing Road, and personally led the army to build this walled city in the territory of Huachi Villa, and Song Renzong gave the name "Dashun City" to the imperial pen of this city. Later, Fan Zhongyan wrote the famous sentence "Fisherman's Proud Autumn Thought" here. It is now a provincial-level cultural relics protection unit.

Another historical record dedicated to Fan Zhongyan's military thoughts, which records the construction process of Dashun City in the vernacular, is excerpted as follows:

"Sun Tzu's Art of War" says that "surprise and attack unprepared", and the Dashun City built by Fan Zhongyan used this strategy. Fan Zhongyan secretly sent his son Fan Chunyou to lead the troops to seize the Mapu Village near Gyeongju, and Fan Zhongyan led the troops to follow, the soldiers did not know where to go in advance, what to do, and when they arrived at the destination, Fan Zhongyan ordered the city to be repaired, and the city of Dashun was repaired ten days later.

Li Yuanhao, the emperor of Western Xia, saw that the Song people had built a city at a choke point, and sent 30,000 troops to capture Dashun City. The Tanguts were deliberately defeated and retreated, luring the Northern Song army into pursuit. Fan Zhongyan had already had a military order not to pursue. The Tanguts had no choice but to withdraw. Since the construction of Dashun City, the Western Xia people no longer dared to attack Qingzhou, and seeing that there was no way to attack the Song Dynasty, they sued for peace with the Great Song Dynasty, and Fan Zhongyan also returned to the dynasty victoriously.

Yang Jiulang, like any dispatch of the black cavalry battalion, built a secret base in advance ten miles away from Dashun City, when he and Xiao Qi rode white waves into Yang Wenguang's barracks in Dashun City, they actually saw the four brothers of the Yang family, "Uncle Yang, our father Yang Wenguang and four mothers, all died in battle three days ago, for fear of causing panic among the soldiers, our four brothers did not make a noise, and we didn't know what to do,,, , Yang Heng opened his mouth and said, seeing the four children who were kneeling in front of him and crying all the time, Yang Jiulang didn't say anything else, "Guang'er, repair two letters for your father, you take the fourth and sixth children, and fly to Tokyo immediately, one to your imperial grandfather, one to the old lady, and bring the female generals of the Yang family when you come."