After Emperor Wu of Song Wudi established the Song Dynasty in the south, 19 years later, Tuoba Tao of the Northern Wei Dynasty destroyed Beiliang, the last small country in the sixteen countries, and unified the north. During the 170 years after the fall of the Eastern Jin Dynasty, there was a confrontation between two regimes in the history of China. The Southern Dynasties changed to the Song, Qi, Liang and Chen Dynasties. The Northern Wei Dynasty of the Northern Dynasties was later divided into the Eastern Wei Dynasty and the Western Wei Dynasty; Eastern Wei and Western Wei were replaced by Northern Qi and Northern Zhou respectively. Historically, this period was collectively referred to as the Southern and Northern Dynasties.

Song Wudi was emperor for two years and died in the third year. After Song Wendi, the son of Emperor Wu of the Han Dynasty, ascended the throne, the Northern Wei Dynasty crossed the Yellow River in a big way, attacked the Song Dynasty and occupied a large area of land south of the Yellow River. Song Wendi sent Tan Daoji to lead the army to resist.

On one occasion, soldiers of the Northern Wei Dynasty attacked Jinan, and Tan Daoji personally led his troops to the water's edge. In more than 20 days, he fought more than 30 wars with Wei Jun. Song Jun won all the way to Licheng. At that time, Tan Daoji was proud and his guard was a little lax. Wei gave an opportunity to launch a surprise attack on the front and rear wings of Tandaoji with two hussars, and set the trench on fire.

Although Tan Daoji's soldiers are brave and good at fighting, they can't hold themselves in the case of food shortage and are ready to withdraw from Licheng. A soldier from Song Jun fled to Wei Ying to surrender and told the generals of the Northern Wei Dynasty that Song Jun was short of food. Northern Wei sent troops to chase Tandaoji, hoping to encircle Song Jun.

When Song Jun soldiers saw a large number of Wei Jun surrounded them, they were a little scared, but Tan Dao Ji unhurriedly ordered the soldiers to camp and rest on the spot. That evening, the Song Jun military camp was brightly lit, and Tan Daoji personally led a group of soldiers in charge of food to check some food in a camp. Some soldiers sang counting with bamboo pieces in their hands, and some soldiers used buckets to measure rice.

Through Wei Bing's spies, I secretly looked into the camp and saw only rice bags full of snow-white rice. The spies soon told Wei that there was more than enough food in Tandaoji camp. If you want to fight Tandaoji, you must lose again. When Wei got the news, he thought that the Song Bing who came to report him was a fake surrender, tricked them into falling for it, and killed the surrendered Song Bing. In fact, Wei will fall into the trap of Tan Daoji. Tan Daoji didn't measure white rice in the camp, and a bucket of sand just covered a small amount of white rice.

Early the next morning, Tan Daoji ordered the soldiers to put on helmets and armor, wear casual clothes, take a carriage and swagger down the road. Wei will be defeated by Tan Dao Ji many times. He was a little afraid of Song Jun, and when he saw Song Jun retreating calmly, he was not sure where they were and how many troops were lying in ambush, so he was afraid to catch up.

Tan Daoji was saved by his composure and resourcefulness, and returned to Li's side safely. Later, the Northern Wei did not dare to attack the Song Dynasty easily. Tan Daoji has made great contributions in Song Wudi and Song Wendi. However, due to his great contribution and high prestige, he aroused the suspicion of the rulers of the Song Dynasty.

On one occasion, Song Wendi was ill. Song Wendi's younger brother, Liu Yikang, discussed with his confidant that if anything happens to the emperor, it will always be a curse to keep Tan Daoji.

They wrote an imperial edict in the name of Song Wendi, insisting that Tan Daoji rallied the bad guys in an attempt to rebel, and arrested Tan Dao Ji, ready to put him to death.

When TanDaoJi was arrested, Deng Yuan's eyes were filled with anger. Angry eyes seemed to burst into flames. He tore off his turban bitterly and fell to the ground, saying, aren't you destroying your own Great Wall of Wan Li? Tan Daoji was finally killed. The news reached the Northern Wei Dynasty. Wei soldiers happily congratulated each other, saying: With Tan Daoji dead, no one in the south will be afraid! Later, Song Wendi also regretted it. On one occasion, the northern Wei army hit Guabu in Jiangbei. Looking at the distant stone town of Jiankang, Song Wendi said with emotion: If Tan Daoji were still alive, Hu Qi would not be so rampant.