In the first month of the Bingwu year, the new emperor Zhao Heng ascended the throne, changed the Yuan Dynasty to Kaiyuan, and replaced Dongchang with the Integrity Department. Few people know that this new monarch, who is famous for his arrogance and humor, was the "Thirteenth Highness" who was ignored in the cold palace a year ago. Under the "protection" of 9,000-year-old Cao Huachun, he became the "Crown Prince of Dongchang" ridiculed by the entire court. However, Zhao Heng took advantage of the situation to be patient and dealt with the power of eunuchs, chief assistants, Jin Yiwei and the harem, using literary talent and power as his blade and arrogance and humor as his armor. He cleverly solved the imperial examination case, outsmarted Jiang Nanyin, calmed down the border crisis, and wiped out his political opponents while talking and laughing. From the charcoal basin in the lonely palace to the throne of Kowloon, he walked through conspiracy and true love, and finally in the snow and fireworks at the turn of Yisi and Bingwu, he made the world understand that the smartest and most arrogant person should sit in this country.