In the fourth year of Chui Gong, Wu Zhou's cruel officials were rampant and Li Tang's family was slaughtered. However, Di Renjie was shocked and reborn in front of the Dali Temple case. Looking at the guard Li Yuanfang holding a sword at the foot of the stairs, he said loudly: "The Li family's ancestral hall is empty. Your surname is Li, and you can inherit the country."
From then on, Di Gong abandoned his old ambition of restoration and devoted himself to paving the imperial path for Li Yuanfang, who was born in a poor family. He relied on his judicial prestige to stabilize people's hearts, get rid of political enemies, and secretly allied with border troops and officials from poor families. Li Yuanfang was ordered to go out to conquer the Turks and quell the civil unrest in the south of the Yangtze River. With his outstanding military exploits and benevolence, he won the awe of the government and the public, and there was no longer any danger of being stabbed secretly by Youlan Sword.
When Wu Zetian grew old and the Zhang brothers rebelled, Di Gong launched the "Second Dragon Coup". In the morning light of Xuanwu Gate, Li Yuanfang killed the rebellious ministers and surrounded the Immortal Palace. The former guards finally stood in the palace. When all the officials were urging people to come in, Di Gong held up the jade seal and said: "Your Majesty will do your best to support the people's wishes."
The new emperor changed the Yuan Dynasty to Jingxing, and Di Gong assisted the government to reform the cruel officials and revive the people's livelihood. The secret of "choosing the dragon between the prime minister and the assistant" is hidden in the gaps in the history books, waiting to be revealed as the prelude to the legend of the prosperous age.