The fighting capacity of the northern government soldiers is very strong, so strong that one soldier went to the battlefield. This made Song Wendi feel very scared, and he wanted to get rid of the northern government soldiers and kill Tan Daoji, the commander of the northern government soldiers. The death of Tan Dao Ji also made the northern government soldiers quietly withdraw from the historical stage.

In 442 AD, the northern government soldiers were divided into two by the then Emperor Wu of Song Wudi. One is led by Tan Daoji, and the barracks are mainly stationed in Guangling. The other part of the army is under the responsibility of the prince of the imperial court, and the military camp is stationed in Jingkou. In 430, his confidant Song Wendi was defeated in the Northern Expedition, and Tan Daoji was instructed to lead troops to support him. In the end, all Tan Daoji's army personnel returned safely, which was particularly surprising, so Tan Daoji's army was also famous. At that time, some people said that Tan Dao Ji had brilliant military exploits and his troops were brave and good at fighting, so some people compared Tan Daoji to Sima Yi in the Three Kingdoms period.

In 435 AD, Song Wendi was dying. He saw that he was dying. At that time, Liu Yikang, the king of Pengcheng, was the heir recognized by Song Wendi. He was afraid that Liu Yikang would be suppressed by Tan Dao Ji after his death. After all, Sima Yi in the Three Kingdoms period later launched a rebellion, paving the way for the descendants of his Sima family, and Wei finally fell into the hands of the Sima family. Song Wendi was afraid of history repeating itself and Tandaoji's rebellion, so he recalled Tandaoji to Beijing with the intention of letting Xianbei people invade the dynasty, and wanted to take this opportunity to kill him to relieve the threat of the dynasty.

But I didn't want Song Wendi's illness to suddenly improve, so Tan Daoji was not injured. A year later, Tan Daoji was about to leave for Guangling when Song Wendi suddenly called Tan Daoji into the palace, and Tan Daoji was killed at that time. In fact, Tan Daoji was killed because he had too many fame and achievements. After Tan Daoji's death, the northern government soldiers gradually declined.

In 450 AD, Song Wendi once again started the northern expedition strategy. At that time, he sent many elite soldiers, but in the end he failed to withdraw. However, the enemy did not let them go. The Northern Wei took the opportunity to counterattack and killed almost all the retreating troops of the Southern Dynasties. This time, the troops sent by the Southern Dynasties were not the soldiers of the Northern Government, because the soldiers of the Northern Government had already withdrawn and no longer existed.