"Beiyang Characters Series" takes Feng Guozhang, Cao Kun, and Wu Peifu, representatives of the Zhili warlords, as the protagonists of each book. Through the description of the characters' unique experiences and events, it fully demonstrates the protagonist's fate of joys and sorrows. Not only the dedication on the battlefield, but also the dealings in situations where there is no smoke.
The scene of the work is grand, with many characters but clear organization. From the unpredictable events to the subtleties of the characters' psychology. Feng Guozhang was cunning and tactful, he had both sides, he was determined to govern the country but was powerless, and his loving wife was smart and charming, and she made every case count; Cao Kun was a sensual person, harboring concubines, and was greedy for money and lust but would rather die than become a traitor; Wu Peifu was obsessed with military strategy and had complicated emotional disputes with three women. In the end, he died tragically at the hands of the Japanese because he refused to flatter Japan and betray his country, and ended his life.