Which period in the history of the Three Kingdoms is the movie Guan Yunchang?

20 1 1, Donnie Yen starred in the movie Guan Yunchang, and the story was set after Cao Cao defeated Liu Bei. His second brother, Guan Yunchang, was forced to land in Cao Cao in order to protect his sister-in-law's safety, and interpreted an eternal classic story of "Being in Cao Cao and Being in the Han Dynasty". Liu Bei's family was trapped in Cao Cao's camp, and Guan Yunchang was forced to fight for Cao Jun because of his loyalty. In World War I, Guan Yunchang single-handedly killed an enemy general, which surprised everyone and was greatly appreciated by Cao Cao. But it is "Cao in my heart and Han in my heart." All courtesy to Cao Cao is a polite refusal! Later, Cao Cao discovered that Guan Yunchang liked Liu Bei's new concubine "Lan Qi", but he was afraid to confess because of a word "righteousness". Cao Cao secretly practiced cunning, sent aphrodisiac and poisoned wine, and trapped Guan Yu in injustice! Guan Yu pulled back from the brink and fought side by side with Lan Qi, who hates his guts! Along the way, Guan Yu shot the general Cao Cao, but behind the mighty, he suffered emotional torture! At the same time, Cao Ying's generals were shaken by Cao Cao's repeated concessions to Guan Yu! In order to stabilize the morale of the army, Cao Cao personally went out and vowed to capture Guan Yu alive! After all kinds of hardships, I finally came to the Yellow River Ferry, and Cao Jun soldiers lying in ambush in all directions have laid an ambush by the calm river! If you don't succeed, you will die. Cao Cao, the sworn enemy, has been treated with courtesy again and again. A loyal man like Guan Yu can't help but shake! By her side, Yilan tried hard to persuade Guan Yunchang to choose between "love" and "righteousness" ...