① Zhou Yu set fire to Sanjiangkou: The plot comes from the 49th episode of Romance of the Three Kingdoms, "Zhou Yu set fire to Sanjiangkou and paid homage to various gods at the Seven Star Altar", which mainly tells the story of Battle of Red Cliffs, a famous historical city in China. A brief introduction is as follows:

After Cao Cao unified the north, he decided to unify the south in one fell swoop. Liu Bei sent Zhuge Liang to fight Confucianism. With the support of Zhou Yu and Lu Su, Sun Quan decided to resist. Zhou Yu took advantage of the weakness of many soldiers in the north who were not used to water warfare and were riddled with diseases, decided on a fire attack strategy, and sent Huang Gai to cheat surrender with a bitter plan. Cao Cao was credulous and boarded a warship connected by iron cables. Zhuge Liang borrowed the east wind, and Huang Gai went straight to Cao Jun water town with the wind, and the Cao Jun warship became a sea of fire. Cao Cao was defeated, and the three pillars were divided.

(2) Huarong Road, Guan Yu and Cao Zhi: The plot comes from "Zhuge Liang calculated Huarong Road Guan Yunchang to release Cao Cao" in the 50th Romance of Three Kingdoms, which mainly tells the story that Cao Cao fled Huarong Road after Battle of Red Cliffs's defeat and was released by Guan Yu. A brief introduction is as follows:

Zhuge Liang ordered Guan Yu to ambush on Huarong Road and ran into Cao Jun who was running away. However, Guan Yu is a man who values righteousness and cannot bear to read Cao Cao's great kindness in the past. Seeing Cao Jun's embarrassment, he was even more unbearable: he was old friends with Cao Jiang and Zhang Liao, so he disobeyed orders and let Cao Jun go, and Cao Cao was able to escape. With Liu Bei's intercession, Guan Yu was exempted from military punishment.