In the absence of the Yan Dynasty, the imperial power declined, aristocratic families fought for power, and border troubles arose. The emperor is ignorant, and the princelings and the three princes are facing each other tit for tat.
After the protagonist travels through time, he is bound to the [Power Strategy System]. The system can provide functions such as [Insight on Forces], [Probability of Instigating Rebellion], [Strategic Deduction], [Talent Identification], and [Military Proficiency], etc., Which can be exchanged for historical power strategies such as "Texting Favor Orders", "Distant Diplomas and Close Attacks", and "Joining Vertical and Horizontal Alliances" to assist the protagonist in controlling the court and pacifying the world.
The time traveler Chu Yunxiao, with the blessing of modern knowledge + system, counterattacked from the deposed prince, fought against the encirclement and suppression of aristocratic families, brothers, and foreign enemies, and finally achieved unification and created a prosperous age.