Enter the Palace at the Beginning and Overthrow the Dynasty from the Inner Court.

Long Chen traveled through Nanliang and became the son of the murdered general Zhenguo. He was rescued by Wu Jian, his former subordinate. He pretended to be a eunuch of the Eastern Zhou Dynasty and lurked in the palace, waiting for an opportunity to avenge his family's enemy, Emperor Li Chengdao of Nanliang. With his modern knowledge and resourcefulness, he helped the fourth princess, Emperor Luo Xi, win literary battles, build cement and coal, and build businesses, and was appreciated by the empress, Luo Qing. He repeatedly solved crises in the court and on the battlefield, and dealt with many female characters. Later, he led his army into a confrontation with Shangguan Wei's army in Nanliang. He cleverly used strategies to set up a series of traps, severely damaged the Nanliang army, captured Caishi City, and destroyed Shangguan Wei's family. This was a key step for the subsequent destruction of Nanliang and the completion of revenge.