After taking Shanggu County, Cao Cao immediately waved his army east to join Zhang Liao.

Zhang Liao went north from Bohai County, first entered Quanzhou in Yuyang County, continued north to Yongnu, then went west into Anci of Guangyang County, and then went north to Guangyang, attacked Jixian County, and then went north to the military capital. After taking the entire Guangyang County, Zhang Liao left a part, and then led his troops to Changping, and once again entered Yuyang County, attacked Anle and Yuyang, and divided a partial division to go south to Hunu and Lu County.

At this time, the Yuan brothers went north, waited until Zhang Liao captured Pinggu to the east, and then attacked Qiping and Yuxi to the north. In this way, the entire Yuyang County was also taken, and after Zhang Liao returned to Jixian County, the Yuan brothers and Nanlou fled eastward through Yuyang County, and it was too late for Zhang Liao to chase after receiving the news.

After Zhang Liao joined Cao Cao in Jixian, Cao Cao once again took Zhang Liao as the front and attacked Youbeiping. Zhang Liao arrived at the end, and the city surrendered without the end. Zhang Liao met a person in Wuzhong, this person is called Tian Yu.

Tian Yu is a very powerful person, he was Liu Bei's subordinate at the beginning, and later Liu Bei left because of his mother's death and went home to guard his filial piety. At that time, Liu Bei was the assassin of Yuzhou, which should have been when Xiaopei or Xuchang, probably around 196. After Tian Yu left Liu Bei, he returned to Youzhou. Gongsun Zhan appointed Tian Yu as the county commander (I checked it on Baidu, it was the county order of Shoudongzhou, but I searched for a long time and didn't find where this place was, but according to speculation, it should be in Yuyang County, Youzhou, and it should be Quanzhou or near Quanzhou).

After the defeat of Gongsun Zhan, Xian Yufu was promoted as Yuyang Taishou, so he asked Tian Yu who he should take refuge in, and Tian Yu said that he should take refuge in Cao Cao. So Xian Yufu went to Xuchang to meet Cao Cao, and reached the front line during the Battle of Guandu. Cao Cao appointed Xian Yufu as the general of Zuodu Liao, sealed the Pavilion Marquis of Changxiang, and returned to Benzhou.

After Cao Cao took Jizhou, he went to rescue Xuchang. At this time, Yuan Shang and Yuan Xi were given time, Xian Yufu had a fight with Yuan Xi before, and after Yuan Shang arrived in Youzhou, he attacked Xian Yufu with Yuan Xi and expelled Xian Yufu to Youbeiping County. Xian Yufu was stationed in Xu Wu, and sent Tian Yu to guard Wuzhong, and they occupied these two counties.

So after Zhang Liao arrived at Wuzhong, Wuzhong surrendered immediately, and they were all his own people. Zhang Liao continued to Xu Wu, while Tian Yu waited for Cao Cao, who followed.

Cao Cao also heard about Tian Yu, and after arriving at Wuquan, he met with Tian Yu and asked him: "Now that the situation in Youzhou is very clear, I don't know if you have any suggestions?" ”

Tian Yu said: "The trouble of Youzhou lies in the Yuan family and Wuhuan, and now that the Yuan family has been defeated, Ming Gong still needs to defeat Wuhuan to stabilize Youzhou." ”

Cao Cao said: "I also want to attack Wuhuan, but I can't do it. ”

Tian Yu said: "Attacking Wuhuan should go straight to its royal court, and its royal court is in Liucheng, western Liaoning. ”

Cao Cao asked, "I don't know what the road is?" ”

Tian Yu said: "There are two roads leading to Liucheng, one is the road we are walking on now, and this road is walking along the seaside. However, the road is rainy and muddy all year round, and it is difficult for the army to walk together. There is also a road that has been abandoned for many years, and only a small group of Wuhuan people can walk. This road is from Xu Wu to Lulongsai, cross the Xuanshui and walk the white wolf, and you can go directly to Liucheng along a river. ”

Cao Cao was overjoyed when he heard this, and then asked, "I wonder if the national envoy can lead the way?" ”

Tian Yu shook his head and said: "Yu has only heard about this road, but he has not walked it. However, there should be people under General Xian Yu, and when Ming Gong arrives at Xu Wu, he can let General Xian Yu nominate candidates. ”

After Cao Cao heard this, he felt very satisfied, so he appointed Tian Yu as the minister of Beihai.

Cao Cao arrived at Xu Wu and saw Xian Yufu, who really had a manpower to recommend.

Yan Rou, this is a person who has been captured by Wuhuan since he was a child, he knows a lot of things about Wuhuan well, and even has many Wuhuan people under him to work for him. Later, Xianbei even helped Yan Rou kill Captain Huwuhuan and let Yan Rou replace him. In the second year of Xingping (195), Xian Yufu, Qi Zhou, and Xian Yuyin promoted Yan Rou as Wuhuan Sima, avenged Liu Yu and attacked Gongsun Zhan, and killed 4,000 people including Zou Dan, a subordinate of Gongsun Zhan.

During the Battle of Guandu, Yan Rou once sent Cao Cao. When Cao Cao broke through Nanpi, Yan Rou also presented a famous horse to Cao Cao. However, after Cao Cao went south, he and Xian Yufu and others were defeated by Yuan and Wu Huan, and they could only hide in Youbeiping.

When Cao Cao expressed his desire to crusade against Youbeiping, Xian Yufu recommended Yan Rou.

Cao Cao told Tian Yu's opinion and asked Yan Rou what the idea was. Yan Rou said: "Tian Guo's strategy is very good, Lu Longsai's road is not much to Wuhuan, and it can have a surprise effect." ”

After Cao Cao heard this, he was much more relieved. However, he still has a slight concern, "But if we go to Lulongse, our logistics will be very difficult." ”

Yan Rou said: "Ming Gong's concerns are very easy to solve, we can't go out too many troops, and they must all be cavalry, bring more horses and livestock, bring more drinking water, it will take us about half a month to reach Liucheng, and we will have no supplies during this time." ”

When Cao Cao heard this, his head was also a little big. He had never fought such a war, but this war had to be fought because he really couldn't afford it. Thinking of this, Cao Cao's adventurous nature in his bones surged up, he took a few shots, and said loudly: "Since this is the case, then we will fight with all arms, and we will send troops to Liucheng in ten days." ”

Ten days later, Cao Cao took Zhang Liao, Yan Rou, and Guo Jia to escort grain and grass in Tianchou, went up to Xu Wushan, and left Lulongsai to the east.

Tian Chou is also an endless person, and his reputation is outside. When Cao Cao reached the end of the day, he recruited him. After meeting, after communicating with Tian Chou, he said to the others: "Tian Chou is not a person who can be appointed as an official!" So he raised Tian Chou as Maocai and appointed him as the county commander, but because he was going to go to Liucheng, Tian Chou had not yet taken office.

Starting from Lulongse, it goes all the way east to cross the Xuanshui. Under the leadership of Yan Rou and Tian Chou, he finally came to the white wolf. However, the very bad news came, that is, the food was gone, and the livestock brought with it were also eaten. With a wave of his hand, Cao Cao directly asked people to kill horses, and it took thousands of horses to get enough meat.

War horses are very intimate to cavalry, and many knights regard war horses as their own lives. However, it was Cao Cao's decision that avoided the defeat of the army. After eating horse meat, the army continued to move forward and went straight to Liucheng, until it was two hundred miles away from Liucheng, when it was discovered by Wuhuan.